Complete List of House Polls Used
Below we have a list of all the House polls used on this site. Only nonpartisan polls are used; polls taken by pollsters working for one of the parties are intentionally omitted as they tend to be more "fun with numbers" exercises rather than attempts to gauge public opinion.
The date given below in column 2 is when the poll ended. The poll length is also given. The polls for each state are sorted in descending order of their midpoints. Incumbents are denoted by asterisks.
The data are also available as plain text and in .csv format for use with Excel. In the latter, the first column is the day number of the midpoint (Jan. 1, 2008 = day 1.0) and the second is the poll length in days.
The site also has a page describing the House races, including brief descriptions of the situation, the names and photos of the candidates, and links to their campaign pages, Wikipedia entries, and state parties.
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-01 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| AL-01 | Democrat | 32% | Republican | 68% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-02 | Democrat | 50% | Republican | 49% | Nov 05 | Nov 05 | Election 2008 | |
| AL-02 | _AL-02!D | 45% | _AL-02!R | 47% | Oct 20 | Oct 22 | Research 2000 | |
| AL-02 | _AL-02!D | 39% | _AL-02!R | 56% | Aug 26 | Aug 28 | SurveyUSA | |
| AL-02 | _AL-02!D | 47% | _AL-02!R | 37% | Aug 06 | Aug 11 | Capital Survey | |
| AL-02 | Democrat | 30% | Republican | 69% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-03 | Democrat | 47% | Republican | 53% | Nov 05 | Nov 05 | Election 2008 | |
| AL-03 | _AL-03!D | 33% | _AL-03!R | 54% | Aug 13 | Aug 18 | Capital Survey | |
| AL-03 | Democrat | 38% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-04 | Democrat | 25% | Republican | 75% | Nov 05 | Nov 05 | Election 2008 | |
| AL-04 | Democrat | 30% | Republican | 70% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-05 | Democrat | 52% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| AL-05 | _AL-05!D | 45% | _AL-05!R | 40% | Aug 19 | Aug 21 | Capital Survey | |
| AL-05 | _AL-05!D | 48% | _AL-05!R | 32% | Apr 01 | Apr 01 | Capital Survey | |
| AL-05 | Democrat | 98% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-06 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| AL-06 | Democrat | 00% | Republican | 98% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AL-07 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| AL-07 | Democrat | 99% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AK-AL | Democrat | 45% | Republican | 50% | Nov 05 | Nov 05 | Election 2008 | |
| AK-AL | _AK-AL!D | 53% | _AK-AL!R | 44% | Oct 28 | Oct 30 | Research 2000 | |
| AK-AL | _AK-AL!D | 51% | _AK-AL!R | 43% | Oct 17 | Oct 19 | Ivan Moore Research | |
| AK-AL | _AK-AL!D | 50% | _AK-AL!R | 44% | Oct 14 | Oct 16 | Research 2000 | |
| AK-AL | _AK-AL!D | 51% | _AK-AL!R | 42% | Oct 03 | Oct 06 | Ivan Moore Research | |
| AK-AL | _AK-AL!D | 49% | _AK-AL!R | 44% | Sep 20 | Sep 22 | Ivan Moore Research | |
| AK-AL | _AK-AL!D | 53% | _AK-AL!R | 39% | Sep 15 | Sep 17 | Research 2000 | |
| AK-AL | _AK-AL!D | 33% | _AK-AL!R | 30% | Jul 24 | Jul 25 | Hays Research Group | |
| AK-AL | Democrat | 40% | Republican | 57% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-01 | Democrat | 56% | Republican | 40% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-01 | Democrat | 43% | Republican | 52% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-02 | Democrat | 37% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-02 | Democrat | 39% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-03 | Democrat | 42% | Republican | 54% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-03 | _AZ-03!D | 40% | _AZ-03!R | 50% | Oct 20 | Oct 22 | Research 2000 | |
| AZ-03 | _AZ-03!D | 39% | _AZ-03!R | 48% | Oct 06 | Oct 08 | Research 2000 | |
| AZ-03 | Democrat | 38% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-04 | Democrat | 72% | Republican | 21% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-04 | Democrat | 73% | Republican | 24% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-05 | Democrat | 53% | Republican | 44% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-05 | Democrat | 50% | Republican | 46% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-06 | Democrat | 35% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-06 | Democrat | 00% | Republican | 75% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-07 | Democrat | 63% | Republican | 33% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-07 | Democrat | 61% | Republican | 35% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AZ-08 | Democrat | 55% | Republican | 43% | Nov 05 | Nov 05 | Election 2008 | |
| AZ-08 | Democrat | 54% | Republican | 42% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AR-01 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| AR-01 | Democrat | 69% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AR-02 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| AR-02 | Democrat | 61% | Republican | 39% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AR-03 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| AR-03 | Democrat | 38% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| AR-04 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| AR-04 | Democrat | 75% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-01 | Democrat | 68% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| CA-01 | Democrat | 66% | Republican | 29% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-02 | Democrat | 43% | Republican | 57% | Nov 05 | Nov 05 | Election 2008 | |
| CA-02 | Democrat | 32% | Republican | 64% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-03 | Democrat | 44% | Republican | 50% | Nov 05 | Nov 05 | Election 2008 | |
| CA-03 | Democrat | 38% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-04 | Democrat | 49% | Republican | 50% | Nov 05 | Nov 05 | Election 2008 | |
| CA-04 | _CA-04!D | 48% | _CA-04!R | 42% | Oct 20 | Oct 22 | Research 2000 | |
| CA-04 | _CA-04!D | 46% | _CA-04!R | 41% | Sep 23 | Sep 25 | Research 2000 | |
| CA-04 | Democrat | 46% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-05 | Democrat | 74% | Republican | 21% | Nov 05 | Nov 05 | Election 2008 | |
| CA-05 | Democrat | 71% | Republican | 24% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-06 | Democrat | 72% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| CA-06 | Democrat | 70% | Republican | 26% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-07 | Democrat | 73% | Republican | 21% | Nov 05 | Nov 05 | Election 2008 | |
| CA-07 | Democrat | 84% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-08 | Democrat | 72% | Republican | 09% | Nov 05 | Nov 05 | Election 2008 | |
| CA-08 | Democrat | 80% | Republican | 11% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-09 | Democrat | 86% | Republican | 10% | Nov 05 | Nov 05 | Election 2008 | |
| CA-09 | Democrat | 86% | Republican | 11% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-10 | Democrat | 65% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| CA-10 | Democrat | 66% | Republican | 34% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-11 | Democrat | 55% | Republican | 45% | Nov 05 | Nov 05 | Election 2008 | |
| CA-11 | _CA-11!D | 52% | _CA-11!R | 41% | Oct 14 | Oct 15 | SurveyUSA | |
| CA-11 | Democrat | 53% | Republican | 47% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-12 | Democrat | 75% | Republican | 19% | Nov 05 | Nov 05 | Election 2008 | |
| CA-12 | _CA-12!D | 76% | _CA-12!R | 09% | Apr 08 | Apr 08 | Special election April 2008 | |
| CA-12 | Democrat | 76% | Republican | 24% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-13 | Democrat | 76% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| CA-13 | Democrat | 75% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-14 | Democrat | 70% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| CA-14 | Democrat | 71% | Republican | 24% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-15 | Democrat | 72% | Republican | 23% | Nov 05 | Nov 05 | Election 2008 | |
| CA-15 | Democrat | 72% | Republican | 28% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-16 | Democrat | 71% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| CA-16 | Democrat | 73% | Republican | 27% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-17 | Democrat | 75% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| CA-17 | Democrat | 76% | Republican | 23% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-18 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-18 | Democrat | 65% | Republican | 35% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-19 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| CA-19 | Democrat | 39% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-20 | Democrat | 73% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| CA-20 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-21 | Democrat | 32% | Republican | 68% | Nov 05 | Nov 05 | Election 2008 | |
| CA-21 | Democrat | 30% | Republican | 67% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-22 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| CA-22 | Democrat | 29% | Republican | 71% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-23 | Democrat | 68% | Republican | 32% | Nov 05 | Nov 05 | Election 2008 | |
| CA-23 | Democrat | 65% | Republican | 35% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-24 | Democrat | 42% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| CA-24 | Democrat | 38% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-25 | Democrat | 43% | Republican | 57% | Nov 05 | Nov 05 | Election 2008 | |
| CA-25 | Democrat | 36% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-26 | Democrat | 41% | Republican | 52% | Nov 05 | Nov 05 | Election 2008 | |
| CA-26 | Democrat | 38% | Republican | 57% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-27 | Democrat | 69% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| CA-27 | Democrat | 69% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-28 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-28 | Democrat | 74% | Republican | 19% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-29 | Democrat | 70% | Republican | 26% | Nov 05 | Nov 05 | Election 2008 | |
| CA-29 | Democrat | 63% | Republican | 27% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-30 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-30 | Democrat | 71% | Republican | 26% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-31 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-31 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-32 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-32 | Democrat | 83% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-33 | Democrat | 88% | Republican | 12% | Nov 05 | Nov 05 | Election 2008 | |
| CA-33 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-34 | Democrat | 77% | Republican | 23% | Nov 05 | Nov 05 | Election 2008 | |
| CA-34 | Democrat | 77% | Republican | 23% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-35 | Democrat | 83% | Republican | 13% | Nov 05 | Nov 05 | Election 2008 | |
| CA-35 | Democrat | 84% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-36 | Democrat | 69% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| CA-36 | Democrat | 63% | Republican | 32% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-37 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-37 | Democrat | 82% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-38 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| CA-38 | Democrat | 75% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-39 | Democrat | 70% | Republican | 30% | Nov 05 | Nov 05 | Election 2008 | |
| CA-39 | Democrat | 66% | Republican | 34% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-40 | Democrat | 37% | Republican | 63% | Nov 05 | Nov 05 | Election 2008 | |
| CA-40 | Democrat | 31% | Republican | 67% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-41 | Democrat | 38% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| CA-41 | Democrat | 33% | Republican | 67% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-42 | Democrat | 40% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| CA-42 | Democrat | 00% | Republican | 100% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-43 | Democrat | 68% | Republican | 32% | Nov 05 | Nov 05 | Election 2008 | |
| CA-43 | Democrat | 64% | Republican | 36% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-44 | Democrat | 49% | Republican | 51% | Nov 05 | Nov 05 | Election 2008 | |
| CA-44 | Democrat | 37% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-45 | Democrat | 43% | Republican | 57% | Nov 05 | Nov 05 | Election 2008 | |
| CA-45 | Democrat | 39% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-46 | Democrat | 43% | Republican | 53% | Nov 05 | Nov 05 | Election 2008 | |
| CA-46 | Democrat | 37% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-47 | Democrat | 67% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| CA-47 | Democrat | 62% | Republican | 38% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-48 | Democrat | 41% | Republican | 55% | Nov 05 | Nov 05 | Election 2008 | |
| CA-48 | Democrat | 37% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-49 | Democrat | 38% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| CA-49 | Democrat | 33% | Republican | 63% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-50 | Democrat | 46% | Republican | 50% | Nov 05 | Nov 05 | Election 2008 | |
| CA-50 | Democrat | 44% | Republican | 53% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-51 | Democrat | 72% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| CA-51 | Democrat | 67% | Republican | 30% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-52 | Democrat | 39% | Republican | 57% | Nov 05 | Nov 05 | Election 2008 | |
| CA-52 | Democrat | 32% | Republican | 65% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CA-53 | Democrat | 69% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| CA-53 | Democrat | 68% | Republican | 30% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-01 | Democrat | 72% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| CO-01 | Democrat | 80% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-02 | Democrat | 62% | Republican | 34% | Nov 05 | Nov 05 | Election 2008 | |
| CO-02 | Democrat | 68% | Republican | 28% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-03 | Democrat | 61% | Republican | 39% | Nov 05 | Nov 05 | Election 2008 | |
| CO-03 | Democrat | 62% | Republican | 37% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-04 | Democrat | 56% | Republican | 44% | Nov 05 | Nov 05 | Election 2008 | |
| CO-04 | _CO-04!D | 50% | _CO-04!R | 43% | Aug 22 | Aug 24 | SurveyUSA | |
| CO-04 | Democrat | 43% | Republican | 46% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-05 | Democrat | 37% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| CO-05 | Democrat | 40% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-06 | Democrat | 40% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| CO-06 | Democrat | 40% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CO-07 | Democrat | 63% | Republican | 37% | Nov 05 | Nov 05 | Election 2008 | |
| CO-07 | Democrat | 55% | Republican | 42% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CT-01 | Democrat | 72% | Republican | 26% | Nov 05 | Nov 05 | Election 2008 | |
| CT-01 | Democrat | 74% | Republican | 26% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CT-02 | Democrat | 65% | Republican | 33% | Nov 05 | Nov 05 | Election 2008 | |
| CT-02 | _CT-02!D | 55% | _CT-02!R | 27% | Sep 22 | Sep 28 | U. of Connecticut | |
| CT-02 | Democrat | 50% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CT-03 | Democrat | 77% | Republican | 20% | Nov 05 | Nov 05 | Election 2008 | |
| CT-03 | Democrat | 76% | Republican | 22% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CT-04 | Democrat | 51% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| CT-04 | _CT-04!D | 44% | _CT-04!R | 44% | Oct 08 | Oct 15 | U. of Connecticut | |
| CT-04 | _CT-04!D | 48% | _CT-04!R | 45% | Oct 13 | Oct 14 | SurveyUSA | |
| CT-04 | _CT-04!D | 31% | _CT-04!R | 41% | Sep 22 | Sep 25 | Sacred Heart U. | |
| CT-04 | Democrat | 48% | Republican | 51% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| CT-05 | Democrat | 59% | Republican | 39% | Nov 05 | Nov 05 | Election 2008 | |
| CT-05 | Democrat | 54% | Republican | 44% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| DE-AL | Democrat | 38% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| DE-AL | Democrat | 39% | Republican | 57% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-01 | Democrat | 30% | Republican | 70% | Nov 05 | Nov 05 | Election 2008 | |
| FL-01 | Democrat | 31% | Republican | 69% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-02 | Democrat | 62% | Republican | 38% | Nov 05 | Nov 05 | Election 2008 | |
| FL-02 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-03 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| FL-03 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-04 | Democrat | 35% | Republican | 65% | Nov 05 | Nov 05 | Election 2008 | |
| FL-04 | Democrat | 30% | Republican | 70% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-05 | Democrat | 39% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| FL-05 | Democrat | 40% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-06 | Democrat | 39% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| FL-06 | Democrat | 40% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-07 | Democrat | 38% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| FL-07 | Democrat | 37% | Republican | 63% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-08 | Democrat | 52% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| FL-08 | Democrat | 46% | Republican | 53% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-09 | Democrat | 36% | Republican | 63% | Nov 05 | Nov 05 | Election 2008 | |
| FL-09 | Democrat | 44% | Republican | 56% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-10 | Democrat | 39% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| FL-10 | Democrat | 34% | Republican | 66% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-11 | Democrat | 70% | Republican | 30% | Nov 05 | Nov 05 | Election 2008 | |
| FL-11 | Democrat | 70% | Republican | 30% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-12 | Democrat | 42% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| FL-12 | Democrat | 00% | Republican | 69% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-13 | Democrat | 38% | Republican | 55% | Nov 05 | Nov 05 | Election 2008 | |
| FL-13 | _FL-13!D | 34% | _FL-13!R | 45% | Oct 20 | Oct 22 | Research 2000 | |
| FL-13 | _FL-13!D | 33% | _FL-13!R | 49% | Sep 30 | Oct 01 | SurveyUSA | |
| FL-13 | _FL-13!D | 31% | _FL-13!R | 43% | Sep 23 | Sep 25 | Research 2000 | |
| FL-13 | Democrat | 49% | Republican | 50% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-14 | Democrat | 25% | Republican | 59% | Nov 05 | Nov 05 | Election 2008 | |
| FL-14 | Democrat | 36% | Republican | 64% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-15 | Democrat | 42% | Republican | 53% | Nov 05 | Nov 05 | Election 2008 | |
| FL-15 | Democrat | 44% | Republican | 56% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-16 | Democrat | 40% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| FL-16 | Democrat | 50% | Republican | 48% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-17 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| FL-17 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-18 | Democrat | 42% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| FL-18 | _FL-18!D | 36% | _FL-18!R | 53% | Sep 23 | Sep 25 | Research 2000 | |
| FL-18 | _FL-18!D | 31% | _FL-18!R | 58% | Jun 06 | Jun 22 | Bendixen | |
| FL-18 | Democrat | 38% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-19 | Democrat | 66% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| FL-19 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-20 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| FL-20 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-21 | Democrat | 42% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| FL-21 | _FL-21!D | 44% | _FL-21!R | 45% | Oct 20 | Oct 23 | Research 2000 | |
| FL-21 | _FL-21!D | 43% | _FL-21!R | 48% | Sep 27 | Oct 01 | Telemundo | |
| FL-21 | _FL-21!D | 48% | _FL-21!R | 46% | Aug 24 | Aug 26 | SurveyUSA | |
| FL-21 | _FL-21!D | 37% | _FL-21!R | 44% | Jun 06 | Jun 22 | Bendixen | |
| FL-21 | Democrat | 41% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-22 | Democrat | 55% | Republican | 45% | Nov 05 | Nov 05 | Election 2008 | |
| FL-22 | Democrat | 51% | Republican | 47% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-23 | Democrat | 82% | Republican | 18% | Nov 05 | Nov 05 | Election 2008 | |
| FL-23 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-24 | Democrat | 57% | Republican | 41% | Nov 05 | Nov 05 | Election 2008 | |
| FL-24 | Democrat | 42% | Republican | 58% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| FL-25 | Democrat | 47% | Republican | 53% | Nov 05 | Nov 05 | Election 2008 | |
| FL-25 | _FL-25!D | 43% | _FL-25!R | 46% | Oct 20 | Oct 22 | Research 2000 | |
| FL-25 | _FL-25!D | 41% | _FL-25!R | 43% | Sep 27 | Oct 01 | Telemundo | |
| FL-25 | _FL-25!D | 41% | _FL-25!R | 45% | Sep 23 | Sep 25 | Research 2000 | |
| FL-25 | _FL-25!D | 39% | _FL-25!R | 44% | Jun 06 | Jun 22 | Bendixen | |
| FL-25 | Democrat | 42% | Republican | 58% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-01 | Democrat | 33% | Republican | 67% | Nov 05 | Nov 05 | Election 2008 | |
| GA-01 | Democrat | 32% | Republican | 69% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-02 | Democrat | 69% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| GA-02 | Democrat | 68% | Republican | 32% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-03 | Democrat | 34% | Republican | 66% | Nov 05 | Nov 05 | Election 2008 | |
| GA-03 | Democrat | 32% | Republican | 68% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-04 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| GA-04 | Democrat | 75% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-05 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| GA-05 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-06 | Democrat | 31% | Republican | 69% | Nov 05 | Nov 05 | Election 2008 | |
| GA-06 | Democrat | 28% | Republican | 72% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-07 | Democrat | 38% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| GA-07 | Democrat | 29% | Republican | 71% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-08 | Democrat | 57% | Republican | 43% | Nov 05 | Nov 05 | Election 2008 | |
| GA-08 | _GA-08!D | 49% | _GA-08!R | 45% | Oct 25 | Oct 26 | SurveyUSA | |
| GA-08 | Democrat | 51% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-09 | Democrat | 24% | Republican | 76% | Nov 05 | Nov 05 | Election 2008 | |
| GA-09 | Democrat | 23% | Republican | 77% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-10 | Democrat | 39% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| GA-10 | _GA-10!D | 00% | _GA-10!R | 100% | Jan 01 | Jan 01 | Special election July 2007 | |
| GA-10 | Democrat | 33% | Republican | 67% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-11 | Democrat | 32% | Republican | 68% | Nov 05 | Nov 05 | Election 2008 | |
| GA-11 | Democrat | 29% | Republican | 71% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-12 | Democrat | 66% | Republican | 34% | Nov 05 | Nov 05 | Election 2008 | |
| GA-12 | Democrat | 50% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| GA-13 | Democrat | 69% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| GA-13 | Democrat | 69% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| HI-01 | Democrat | 77% | Republican | 19% | Nov 05 | Nov 05 | Election 2008 | |
| HI-01 | Democrat | 69% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| HI-02 | Democrat | 76% | Republican | 20% | Nov 05 | Nov 05 | Election 2008 | |
| HI-02 | Democrat | 61% | Republican | 39% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| ID-01 | Democrat | 51% | Republican | 49% | Nov 05 | Nov 05 | Election 2008 | |
| ID-01 | _ID-01!D | 51% | _ID-01!R | 45% | Oct 18 | Oct 19 | SurveyUSA | |
| ID-01 | _ID-01!D | 35% | _ID-01!R | 46% | Sep 17 | Sep 18 | Research 2000 | |
| ID-01 | Democrat | 45% | Republican | 50% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| ID-02 | Democrat | 29% | Republican | 71% | Nov 05 | Nov 05 | Election 2008 | |
| ID-02 | Democrat | 34% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-01 | Democrat | 86% | Republican | 14% | Nov 05 | Nov 05 | Election 2008 | |
| IL-01 | Democrat | 84% | Republican | 16% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-02 | Democrat | 89% | Republican | 11% | Nov 05 | Nov 05 | Election 2008 | |
| IL-02 | Democrat | 85% | Republican | 12% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-03 | Democrat | 73% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| IL-03 | Democrat | 77% | Republican | 23% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-04 | Democrat | 81% | Republican | 11% | Nov 05 | Nov 05 | Election 2008 | |
| IL-04 | Democrat | 86% | Republican | 14% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-05 | Democrat | 74% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| IL-05 | Democrat | 78% | Republican | 22% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-06 | Democrat | 42% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| IL-06 | Democrat | 49% | Republican | 51% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-07 | Democrat | 85% | Republican | 15% | Nov 05 | Nov 05 | Election 2008 | |
| IL-07 | Democrat | 87% | Republican | 13% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-08 | Democrat | 60% | Republican | 40% | Nov 05 | Nov 05 | Election 2008 | |
| IL-08 | Democrat | 51% | Republican | 44% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-09 | Democrat | 75% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| IL-09 | Democrat | 75% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-10 | Democrat | 46% | Republican | 54% | Nov 05 | Nov 05 | Election 2008 | |
| IL-10 | _IL-10!D | 49% | _IL-10!R | 43% | Oct 20 | Oct 22 | Research 2000 | |
| IL-10 | _IL-10!D | 52% | _IL-10!R | 44% | Oct 04 | Oct 05 | SurveyUSA | |
| IL-10 | _IL-10!D | 38% | _IL-10!R | 44% | Sep 30 | Oct 01 | Research 2000 | |
| IL-10 | Democrat | 47% | Republican | 53% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-11 | Democrat | 58% | Republican | 35% | Nov 05 | Nov 05 | Election 2008 | |
| IL-11 | Democrat | 45% | Republican | 55% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-12 | Democrat | 71% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| IL-12 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-13 | Democrat | 44% | Republican | 53% | Nov 05 | Nov 05 | Election 2008 | |
| IL-13 | Democrat | 42% | Republican | 58% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-14 | Democrat | 57% | Republican | 43% | Nov 05 | Nov 05 | Election 2008 | |
| IL-14 | Democrat | 40% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-15 | Democrat | 36% | Republican | 64% | Nov 05 | Nov 05 | Election 2008 | |
| IL-15 | Democrat | 42% | Republican | 58% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-16 | Democrat | 36% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| IL-16 | Democrat | 32% | Republican | 64% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-17 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| IL-17 | Democrat | 57% | Republican | 43% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-18 | Democrat | 38% | Republican | 59% | Nov 05 | Nov 05 | Election 2008 | |
| IL-18 | Democrat | 33% | Republican | 67% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IL-19 | Democrat | 33% | Republican | 65% | Nov 05 | Nov 05 | Election 2008 | |
| IL-19 | Democrat | 39% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-01 | Democrat | 71% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| IN-01 | Democrat | 70% | Republican | 27% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-02 | Democrat | 67% | Republican | 30% | Nov 05 | Nov 05 | Election 2008 | |
| IN-02 | _IN-02!D | 53% | _IN-02!R | 35% | Sep 29 | Sep 30 | Research 2000 | |
| IN-02 | Democrat | 54% | Republican | 46% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-03 | Democrat | 40% | Republican | 55% | Nov 05 | Nov 05 | Election 2008 | |
| IN-03 | _IN-03!D | 44% | _IN-03!R | 42% | Oct 23 | Oct 24 | Howey-Gauge | |
| IN-03 | _IN-03!D | 40% | _IN-03!R | 45% | Oct 16 | Oct 18 | Research 2000 | |
| IN-03 | Democrat | 46% | Republican | 54% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-04 | Democrat | 40% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| IN-04 | Democrat | 38% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-05 | Democrat | 34% | Republican | 66% | Nov 05 | Nov 05 | Election 2008 | |
| IN-05 | Democrat | 31% | Republican | 65% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-06 | Democrat | 33% | Republican | 64% | Nov 05 | Nov 05 | Election 2008 | |
| IN-06 | Democrat | 40% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-07 | Democrat | 65% | Republican | 35% | Nov 05 | Nov 05 | Election 2008 | |
| IN-07 | _IN-07!D | 53% | _IN-07!R | 38% | Oct 24 | Oct 28 | Research 2000 | |
| IN-07 | _IN-07!D | 51% | _IN-07!R | 35% | Sep 29 | Oct 03 | Research 2000 | |
| IN-07 | _IN-07!D | 54% | _IN-07!R | 43% | Mar 11 | Mar 11 | Special election March 2008 | |
| IN-07 | Democrat | 54% | Republican | 46% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-08 | Democrat | 65% | Republican | 35% | Nov 05 | Nov 05 | Election 2008 | |
| IN-08 | Democrat | 61% | Republican | 39% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IN-09 | Democrat | 58% | Republican | 38% | Nov 05 | Nov 05 | Election 2008 | |
| IN-09 | _IN-09!D | 53% | _IN-09!R | 40% | Oct 24 | Oct 28 | Research 2000 | |
| IN-09 | _IN-09!D | 54% | _IN-09!R | 39% | Oct 22 | Oct 23 | SurveyUSA | |
| IN-09 | _IN-09!D | 53% | _IN-09!R | 38% | Oct 04 | Oct 05 | SurveyUSA | |
| IN-09 | _IN-09!D | 49% | _IN-09!R | 37% | Sep 29 | Oct 03 | Research 2000 | |
| IN-09 | _IN-09!D | 50% | _IN-09!R | 39% | Sep 08 | Sep 10 | SurveyUSA | |
| IN-09 | _IN-09!D | 49% | _IN-09!R | 42% | Jul 28 | Jul 30 | SurveyUSA | |
| IN-09 | _IN-09!D | 51% | _IN-09!R | 40% | Jun 16 | Jun 18 | SurveyUSA | |
| IN-09 | Democrat | 50% | Republican | 45% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IA-01 | Democrat | 64% | Republican | 36% | Nov 05 | Nov 05 | Election 2008 | |
| IA-01 | Democrat | 55% | Republican | 43% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IA-02 | Democrat | 57% | Republican | 39% | Nov 05 | Nov 05 | Election 2008 | |
| IA-02 | Democrat | 51% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IA-03 | Democrat | 56% | Republican | 42% | Nov 05 | Nov 05 | Election 2008 | |
| IA-03 | Democrat | 52% | Republican | 46% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IA-04 | Democrat | 39% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| IA-04 | _IA-04!D | 42% | _IA-04!R | 47% | Oct 20 | Oct 22 | Research 2000 | |
| IA-04 | Democrat | 43% | Republican | 57% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| IA-05 | Democrat | 37% | Republican | 60% | Nov 05 | Nov 05 | Election 2008 | |
| IA-05 | Democrat | 36% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KS-01 | Democrat | 13% | Republican | 82% | Nov 05 | Nov 05 | Election 2008 | |
| KS-01 | _KS-01!D | 13% | _KS-01!R | 77% | Aug 17 | Aug 19 | SurveyUSA | |
| KS-01 | Democrat | 20% | Republican | 79% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KS-02 | Democrat | 46% | Republican | 51% | Nov 05 | Nov 05 | Election 2008 | |
| KS-02 | _KS-02!D | 50% | _KS-02!R | 43% | Aug 19 | Aug 21 | SurveyUSA | |
| KS-02 | Democrat | 51% | Republican | 47% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KS-03 | Democrat | 56% | Republican | 40% | Nov 05 | Nov 05 | Election 2008 | |
| KS-03 | _KS-03!D | 53% | _KS-03!R | 42% | Oct 25 | Oct 26 | SurveyUSA | |
| KS-03 | Democrat | 65% | Republican | 34% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KS-04 | Democrat | 32% | Republican | 64% | Nov 05 | Nov 05 | Election 2008 | |
| KS-04 | _KS-04!D | 29% | _KS-04!R | 62% | Oct 20 | Oct 21 | SurveyUSA | |
| KS-04 | _KS-04!D | 30% | _KS-04!R | 61% | Aug 17 | Aug 19 | SurveyUSA | |
| KS-04 | Democrat | 34% | Republican | 64% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KY-01 | Democrat | 36% | Republican | 64% | Nov 05 | Nov 05 | Election 2008 | |
| KY-01 | Democrat | 40% | Republican | 60% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KY-02 | Democrat | 47% | Republican | 53% | Nov 05 | Nov 05 | Election 2008 | |
| KY-02 | _KY-02!D | 43% | _KY-02!R | 53% | Oct 27 | Oct 28 | SurveyUSA | |
| KY-02 | _KY-02!D | 42% | _KY-02!R | 51% | Oct 15 | Oct 16 | SurveyUSA | |
| KY-02 | _KY-02!D | 43% | _KY-02!R | 49% | Sep 24 | Sep 25 | SurveyUSA | |
| KY-02 | _KY-02!D | 47% | _KY-02!R | 44% | Jun 27 | Jun 29 | SurveyUSA | |
| KY-02 | Democrat | 45% | Republican | 55% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KY-03 | Democrat | 59% | Republican | 41% | Nov 05 | Nov 05 | Election 2008 | |
| KY-03 | _KY-03!D | 57% | _KY-03!R | 41% | Oct 21 | Oct 22 | SurveyUSA | |
| KY-03 | _KY-03!D | 57% | _KY-03!R | 41% | Oct 14 | Oct 15 | SurveyUSA | |
| KY-03 | _KY-03!D | 53% | _KY-03!R | 45% | Sep 05 | Sep 07 | SurveyUSA | |
| KY-03 | _KY-03!D | 53% | _KY-03!R | 43% | Jul 18 | Jul 20 | SurveyUSA | |
| KY-03 | _KY-03!D | 57% | _KY-03!R | 40% | Jun 06 | Jun 08 | SurveyUSA | |
| KY-03 | Democrat | 51% | Republican | 48% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KY-04 | Democrat | 37% | Republican | 63% | Nov 05 | Nov 05 | Election 2008 | |
| KY-04 | _KY-04!D | 37% | _KY-04!R | 58% | Oct 26 | Oct 27 | SurveyUSA | |
| KY-04 | _KY-04!D | 36% | _KY-04!R | 58% | Sep 30 | Oct 01 | SurveyUSA | |
| KY-04 | _KY-04!D | 41% | _KY-04!R | 54% | Jun 28 | Jun 30 | SurveyUSA | |
| KY-04 | Democrat | 43% | Republican | 52% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KY-05 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| KY-05 | Democrat | 26% | Republican | 74% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| KY-06 | Democrat | 65% | Republican | 35% | Nov 05 | Nov 05 | Election 2008 | |
| KY-06 | Democrat | 85% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-01 | Democrat | 34% | Republican | 66% | Nov 05 | Nov 05 | Election 2008 | |
| LA-01 | _LA-01!D | 25% | _LA-01!R | 73% | May 03 | May 03 | Special election May 2008 | |
| LA-01 | Democrat | 07% | Republican | 88% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-02 | Democrat | 47% | Republican | 50% | Nov 05 | Nov 05 | Election 2008 | |
| LA-02 | Democrat | 30% | Republican | 13% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-03 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| LA-03 | Democrat | 55% | Republican | 40% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-04 | Democrat | 47% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| LA-04 | Democrat | 17% | Republican | 57% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-05 | Democrat | 0% | Republican | 100% | Nov 05 | Nov 05 | Election 2008 | |
| LA-05 | Democrat | 29% | Republican | 68% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-06 | Democrat | 40% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| LA-06 | _LA-06!D | 49% | _LA-06!R | 46% | May 03 | May 03 | Special election May 2008 | |
| LA-06 | Democrat | 00% | Republican | 83% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| LA-07 | Democrat | 34% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| LA-07 | Democrat | 29% | Republican | 71% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| ME-01 | Democrat | 55% | Republican | 45% | Nov 05 | Nov 05 | Election 2008 | |
| ME-01 | Democrat | 61% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| ME-02 | Democrat | 67% | Republican | 33% | Nov 05 | Nov 05 | Election 2008 | |
| ME-02 | Democrat | 71% | Republican | 29% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-01 | Democrat | 50% | Republican | 49% | Nov 05 | Nov 05 | Election 2008 | |
| MD-01 | _MD-01!D | 40% | _MD-01!R | 44% | Oct 20 | Oct 22 | Research 2000 | |
| MD-01 | Democrat | 31% | Republican | 69% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-02 | Democrat | 72% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| MD-02 | Democrat | 69% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-03 | Democrat | 70% | Republican | 30% | Nov 05 | Nov 05 | Election 2008 | |
| MD-03 | Democrat | 64% | Republican | 34% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-04 | Democrat | 86% | Republican | 13% | Nov 05 | Nov 05 | Election 2008 | |
| MD-04 | Democrat | 81% | Republican | 19% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-05 | Democrat | 74% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| MD-05 | Democrat | 83% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-06 | Democrat | 39% | Republican | 58% | Nov 05 | Nov 05 | Election 2008 | |
| MD-06 | Democrat | 38% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-07 | Democrat | 80% | Republican | 18% | Nov 05 | Nov 05 | Election 2008 | |
| MD-07 | Democrat | 98% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MD-08 | Democrat | 75% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| MD-08 | Democrat | 77% | Republican | 22% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-01 | Democrat | 73% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| MA-01 | Democrat | 76% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-02 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MA-02 | Democrat | 99% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-03 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MA-03 | Democrat | 99% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-04 | Democrat | 68% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| MA-04 | Democrat | 98% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-05 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MA-05 | _MA-05!D | 51% | _MA-05!R | 45% | Jan 01 | Jan 01 | Special election Oct. 2007 | |
| MA-05 | Democrat | 98% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-06 | Democrat | 70% | Republican | 30% | Nov 05 | Nov 05 | Election 2008 | |
| MA-06 | Democrat | 70% | Republican | 30% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-07 | Democrat | 76% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| MA-07 | Democrat | 98% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-08 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MA-08 | Democrat | 91% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-09 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MA-09 | Democrat | 78% | Republican | 22% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MA-10 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MA-10 | Democrat | 64% | Republican | 29% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-01 | Democrat | 65% | Republican | 33% | Nov 05 | Nov 05 | Election 2008 | |
| MI-01 | Democrat | 69% | Republican | 28% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-02 | Democrat | 35% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| MI-02 | Democrat | 32% | Republican | 66% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-03 | Democrat | 35% | Republican | 61% | Nov 05 | Nov 05 | Election 2008 | |
| MI-03 | Democrat | 35% | Republican | 63% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-04 | Democrat | 36% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| MI-04 | Democrat | 38% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-05 | Democrat | 70% | Republican | 27% | Nov 05 | Nov 05 | Election 2008 | |
| MI-05 | Democrat | 73% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-06 | Democrat | 39% | Republican | 59% | Nov 05 | Nov 05 | Election 2008 | |
| MI-06 | Democrat | 38% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-07 | Democrat | 49% | Republican | 46% | Nov 05 | Nov 05 | Election 2008 | |
| MI-07 | _MI-07!D | 40% | _MI-07!R | 43% | Aug 20 | Aug 22 | EPIC-MRA | |
| MI-07 | _MI-07!D | 51% | _MI-07!R | 40% | Feb 27 | Mar 02 | EPIC-MRA | |
| MI-07 | Democrat | 46% | Republican | 50% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-08 | Democrat | 40% | Republican | 57% | Nov 05 | Nov 05 | Election 2008 | |
| MI-08 | Democrat | 43% | Republican | 55% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-09 | Democrat | 52% | Republican | 43% | Nov 05 | Nov 05 | Election 2008 | |
| MI-09 | _MI-09!D | 43% | _MI-09!R | 43% | Sep 30 | Oct 02 | Mitchell Research | |
| MI-09 | _MI-09!D | 36% | _MI-09!R | 43% | Aug 21 | Aug 23 | EPIC-MRA | |
| MI-09 | Democrat | 46% | Republican | 52% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-10 | Democrat | 31% | Republican | 66% | Nov 05 | Nov 05 | Election 2008 | |
| MI-10 | Democrat | 31% | Republican | 66% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-11 | Democrat | 45% | Republican | 51% | Nov 05 | Nov 05 | Election 2008 | |
| MI-11 | Democrat | 43% | Republican | 54% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-12 | Democrat | 72% | Republican | 24% | Nov 05 | Nov 05 | Election 2008 | |
| MI-12 | Democrat | 70% | Republican | 26% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-13 | Democrat | 74% | Republican | 19% | Nov 05 | Nov 05 | Election 2008 | |
| MI-13 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-14 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MI-14 | Democrat | 85% | Republican | 15% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MI-15 | Democrat | 71% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| MI-15 | Democrat | 88% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-01 | Democrat | 63% | Republican | 33% | Nov 05 | Nov 05 | Election 2008 | |
| MN-01 | Democrat | 53% | Republican | 47% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-02 | Democrat | 43% | Republican | 57% | Nov 05 | Nov 05 | Election 2008 | |
| MN-02 | Democrat | 40% | Republican | 56% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-03 | Democrat | 41% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| MN-03 | _MN-03!D | 41% | _MN-03!R | 46% | Oct 29 | Oct 30 | SurveyUSA | |
| MN-03 | _MN-03!D | 44% | _MN-03!R | 45% | Oct 26 | Oct 27 | SurveyUSA | |
| MN-03 | _MN-03!D | 46% | _MN-03!R | 43% | Oct 06 | Oct 07 | SurveyUSA | |
| MN-03 | _MN-03!D | 41% | _MN-03!R | 44% | Aug 26 | Aug 28 | SurveyUSA | |
| MN-03 | Democrat | 35% | Republican | 65% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-04 | Democrat | 69% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| MN-04 | Democrat | 70% | Republican | 30% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-05 | Democrat | 71% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| MN-05 | Democrat | 56% | Republican | 21% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-06 | Democrat | 44% | Republican | 46% | Nov 05 | Nov 05 | Election 2008 | |
| MN-06 | _MN-06!D | 45% | _MN-06!R | 46% | Oct 29 | Oct 30 | SurveyUSA | |
| MN-06 | _MN-06!D | 45% | _MN-06!R | 43% | Oct 21 | Oct 23 | U. of Minnesota | |
| MN-06 | _MN-06!D | 47% | _MN-06!R | 44% | Oct 21 | Oct 22 | SurveyUSA | |
| MN-06 | Democrat | 42% | Republican | 50% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-07 | Democrat | 72% | Republican | 28% | Nov 05 | Nov 05 | Election 2008 | |
| MN-07 | Democrat | 70% | Republican | 29% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MN-08 | Democrat | 68% | Republican | 32% | Nov 05 | Nov 05 | Election 2008 | |
| MN-08 | Democrat | 64% | Republican | 34% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MS-01 | Democrat | 54% | Republican | 44% | Nov 05 | Nov 05 | Election 2008 | |
| MS-01 | _MS-01!D | 54% | _MS-01!R | 46% | May 13 | May 13 | Special election May 2008 | |
| MS-01 | Democrat | 34% | Republican | 66% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MS-02 | Democrat | 69% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| MS-02 | Democrat | 64% | Republican | 36% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MS-03 | Democrat | 37% | Republican | 63% | Nov 05 | Nov 05 | Election 2008 | |
| MS-03 | Democrat | 00% | Republican | 78% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MS-04 | Democrat | 75% | Republican | 25% | Nov 05 | Nov 05 | Election 2008 | |
| MS-04 | Democrat | 80% | Republican | 20% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-01 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| MO-01 | Democrat | 73% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-02 | Democrat | 36% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| MO-02 | Democrat | 37% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-03 | Democrat | 66% | Republican | 30% | Nov 05 | Nov 05 | Election 2008 | |
| MO-03 | Democrat | 66% | Republican | 32% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-04 | Democrat | 66% | Republican | 34% | Nov 05 | Nov 05 | Election 2008 | |
| MO-04 | Democrat | 68% | Republican | 29% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-05 | Democrat | 64% | Republican | 36% | Nov 05 | Nov 05 | Election 2008 | |
| MO-05 | Democrat | 64% | Republican | 32% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-06 | Democrat | 37% | Republican | 59% | Nov 05 | Nov 05 | Election 2008 | |
| MO-06 | _MO-06!D | 36% | _MO-06!R | 54% | Oct 27 | Oct 28 | SurveyUSA | |
| MO-06 | _MO-06!D | 40% | _MO-06!R | 51% | Oct 13 | Oct 14 | SurveyUSA | |
| MO-06 | _MO-06!D | 42% | _MO-06!R | 51% | Sep 17 | Sep 18 | SurveyUSA | |
| MO-06 | _MO-06!D | 44% | _MO-06!R | 48% | Jul 30 | Jul 31 | SurveyUSA | |
| MO-06 | _MO-06!D | 39% | _MO-06!R | 49% | May 16 | May 18 | SurveyUSA | |
| MO-06 | Democrat | 36% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-07 | Democrat | 28% | Republican | 68% | Nov 05 | Nov 05 | Election 2008 | |
| MO-07 | Democrat | 30% | Republican | 67% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-08 | Democrat | 26% | Republican | 71% | Nov 05 | Nov 05 | Election 2008 | |
| MO-08 | Democrat | 26% | Republican | 72% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MO-09 | Democrat | 47% | Republican | 50% | Nov 05 | Nov 05 | Election 2008 | |
| MO-09 | _MO-09!D | 47% | _MO-09!R | 42% | Oct 20 | Oct 22 | Research 2000 | |
| MO-09 | _MO-09!D | 40% | _MO-09!R | 49% | Sep 16 | Sep 18 | Research 2000 | |
| MO-09 | _MO-09!D | 38% | _MO-09!R | 50% | Sep 01 | Sep 02 | SurveyUSA | |
| MO-09 | Democrat | 36% | Republican | 61% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| MT-AL | Democrat | 32% | Republican | 64% | Nov 05 | Nov 05 | Election 2008 | |
| MT-AL | _MT-AL!D | 39% | _MT-AL!R | 55% | Oct 28 | Oct 30 | Research 2000 | |
| MT-AL | _MT-AL!D | 38% | _MT-AL!R | 52% | Oct 15 | Oct 16 | Research 2000 | |
| MT-AL | _MT-AL!D | 20% | _MT-AL!R | 52% | May 19 | May 21 | Mason-Dixon | |
| MT-AL | Democrat | 39% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NE-01 | Democrat | 30% | Republican | 70% | Nov 05 | Nov 05 | Election 2008 | |
| NE-01 | Democrat | 42% | Republican | 58% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NE-02 | Democrat | 48% | Republican | 52% | Nov 05 | Nov 05 | Election 2008 | |
| NE-02 | _NE-02!D | 39% | _NE-02!R | 49% | Oct 06 | Oct 08 | Research 2000 | |
| NE-02 | Democrat | 45% | Republican | 55% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NE-03 | Democrat | 23% | Republican | 77% | Nov 05 | Nov 05 | Election 2008 | |
| NE-03 | Democrat | 45% | Republican | 55% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NV-01 | Democrat | 68% | Republican | 28% | Nov 05 | Nov 05 | Election 2008 | |
| NV-01 | Democrat | 65% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NV-02 | Democrat | 41% | Republican | 52% | Nov 05 | Nov 05 | Election 2008 | |
| NV-02 | _NV-02!D | 37% | _NV-02!R | 50% | Oct 28 | Oct 29 | Mason-Dixon | |
| NV-02 | _NV-02!D | 38% | _NV-02!R | 51% | Oct 08 | Oct 09 | Mason-Dixon | |
| NV-02 | _NV-02!D | 41% | _NV-02!R | 48% | Oct 03 | Oct 06 | Research 2000 | |
| NV-02 | _NV-02!D | 42% | _NV-02!R | 47% | Aug 18 | Aug 20 | Research 2000 | |
| NV-02 | _NV-02!D | 39% | _NV-02!R | 53% | Jun 09 | Jun 11 | Mason-Dixon | |
| NV-02 | Democrat | 45% | Republican | 50% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NV-03 | Democrat | 48% | Republican | 42% | Nov 05 | Nov 05 | Election 2008 | |
| NV-03 | _NV-03!D | 44% | _NV-03!R | 44% | Oct 28 | Oct 29 | Mason-Dixon | |
| NV-03 | _NV-03!D | 47% | _NV-03!R | 45% | Oct 20 | Oct 22 | Research 2000 | |
| NV-03 | _NV-03!D | 37% | _NV-03!R | 46% | Oct 08 | Oct 09 | Mason-Dixon | |
| NV-03 | _NV-03!D | 42% | _NV-03!R | 45% | Jun 09 | Jun 11 | Mason-Dixon | |
| NV-03 | Democrat | 47% | Republican | 48% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NH-01 | Democrat | 52% | Republican | 46% | Nov 05 | Nov 05 | Election 2008 | |
| NH-01 | _NH-01!D | 44% | _NH-01!R | 41% | Oct 29 | Oct 30 | SurveyUSA | |
| NH-01 | _NH-01!D | 44% | _NH-01!R | 41% | Oct 27 | Oct 29 | U. of New Hampshire | |
| NH-01 | _NH-01!D | 48% | _NH-01!R | 40% | Oct 24 | Oct 26 | U. of New Hampshire | |
| NH-01 | _NH-01!D | 44% | _NH-01!R | 39% | Oct 18 | Oct 22 | U. of New Hampshire | |
| NH-01 | _NH-01!D | 50% | _NH-01!R | 41% | Oct 04 | Oct 05 | SurveyUSA | |
| NH-01 | _NH-01!D | 44% | _NH-01!R | 43% | Sep 22 | Sep 24 | Research 2000 | |
| NH-01 | _NH-01!D | 42% | _NH-01!R | 45% | Sep 14 | Sep 21 | U. of New Hampshire | |
| NH-01 | Democrat | 51% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NH-02 | Democrat | 57% | Republican | 41% | Nov 05 | Nov 05 | Election 2008 | |
| NH-02 | _NH-02!D | 54% | _NH-02!R | 26% | Oct 29 | Oct 30 | SurveyUSA | |
| NH-02 | _NH-02!D | 48% | _NH-02!R | 26% | Oct 24 | Oct 26 | U. of New Hampshire | |
| NH-02 | _NH-02!D | 47% | _NH-02!R | 34% | Sep 22 | Sep 24 | Research 2000 | |
| NH-02 | _NH-02!D | 38% | _NH-02!R | 26% | Sep 14 | Sep 21 | U. of New Hampshire | |
| NH-02 | _NH-02!D | 44% | _NH-02!R | 25% | Jul 11 | Jul 20 | U. of New Hampshire | |
| NH-02 | Democrat | 53% | Republican | 46% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-01 | Democrat | 72% | Republican | 26% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-01 | _NJ-01!D | 73% | _NJ-01!R | 16% | Sep 18 | Sep 20 | Zogby | |
| NJ-01 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-02 | Democrat | 39% | Republican | 59% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-02 | _NJ-02!D | 26% | _NJ-02!R | 62% | Sep 18 | Sep 20 | Zogby | |
| NJ-02 | Democrat | 36% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-03 | Democrat | 52% | Republican | 48% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-03 | _NJ-03!D | 41% | _NJ-03!R | 44% | Sep 30 | Oct 02 | Monmouth U. | |
| NJ-03 | _NJ-03!D | 37% | _NJ-03!R | 39% | Sep 18 | Sep 20 | Zogby | |
| NJ-03 | Democrat | 41% | Republican | 58% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-04 | Democrat | 33% | Republican | 66% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-04 | Democrat | 33% | Republican | 66% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-05 | Democrat | 42% | Republican | 56% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-05 | _NJ-05!D | 40% | _NJ-05!R | 47% | Oct 20 | Oct 22 | Research 2000 | |
| NJ-05 | _NJ-05!D | 34% | _NJ-05!R | 49% | Sep 17 | Sep 18 | Research 2000 | |
| NJ-05 | Democrat | 44% | Republican | 55% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-06 | Democrat | 67% | Republican | 32% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-06 | Democrat | 69% | Republican | 30% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-07 | Democrat | 41% | Republican | 51% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-07 | _NJ-07!D | 39% | _NJ-07!R | 43% | Sep 30 | Oct 02 | Monmouth U. | |
| NJ-07 | Democrat | 48% | Republican | 49% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-08 | Democrat | 71% | Republican | 28% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-08 | Democrat | 71% | Republican | 28% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-09 | Democrat | 68% | Republican | 32% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-09 | Democrat | 71% | Republican | 28% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-10 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-10 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-11 | Democrat | 37% | Republican | 62% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-11 | Democrat | 37% | Republican | 62% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-12 | Democrat | 62% | Republican | 36% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-12 | Democrat | 66% | Republican | 34% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NJ-13 | Democrat | 75% | Republican | 22% | Nov 05 | Nov 05 | Election 2008 | |
| NJ-13 | Democrat | 78% | Republican | 19% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NM-01 | Democrat | 55% | Republican | 45% | Nov 05 | Nov 05 | Election 2008 | |
| NM-01 | _NM-01!D | 47% | _NM-01!R | 43% | Oct 28 | Oct 30 | Research and Polling | |
| NM-01 | _NM-01!D | 43% | _NM-01!R | 41% | Sep 29 | Oct 02 | Research and Polling | |
| NM-01 | _NM-01!D | 51% | _NM-01!R | 46% | Aug 26 | Aug 28 | SurveyUSA | |
| NM-01 | Democrat | 49% | Republican | 50% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NM-02 | Democrat | 56% | Republican | 44% | Nov 05 | Nov 05 | Election 2008 | |
| NM-02 | _NM-02!D | 45% | _NM-02!R | 41% | Oct 28 | Oct 30 | Research and Polling | |
| NM-02 | _NM-02!D | 47% | _NM-02!R | 43% | Sep 30 | Oct 01 | Research 2000 | |
| NM-02 | Democrat | 40% | Republican | 59% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NM-03 | Democrat | 56% | Republican | 31% | Nov 05 | Nov 05 | Election 2008 | |
| NM-03 | _NM-03!D | 51% | _NM-03!R | 23% | Oct 28 | Oct 30 | Research and Polling | |
| NM-03 | Democrat | 75% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-01 | Democrat | 58% | Republican | 42% | Nov 05 | Nov 05 | Election 2008 | |
| NY-01 | Democrat | 55% | Republican | 32% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-02 | Democrat | 66% | Republican | 34% | Nov 05 | Nov 05 | Election 2008 | |
| NY-02 | Democrat | 63% | Republican | 25% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-03 | Democrat | 36% | Republican | 64% | Nov 05 | Nov 05 | Election 2008 | |
| NY-03 | Democrat | 42% | Republican | 48% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-04 | Democrat | 64% | Republican | 36% | Nov 05 | Nov 05 | Election 2008 | |
| NY-04 | Democrat | 59% | Republican | 31% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-05 | Democrat | 70% | Republican | 28% | Nov 05 | Nov 05 | Election 2008 | |
| NY-05 | Democrat | 91% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-06 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| NY-06 | Democrat | 100% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-07 | Democrat | 85% | Republican | 15% | Nov 05 | Nov 05 | Election 2008 | |
| NY-07 | Democrat | 79% | Republican | 14% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-08 | Democrat | 80% | Republican | 20% | Nov 05 | Nov 05 | Election 2008 | |
| NY-08 | Democrat | 75% | Republican | 14% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-09 | Democrat | 100% | Republican | 0% | Nov 05 | Nov 05 | Election 2008 | |
| NY-09 | Democrat | 93% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-10 | Democrat | 94% | Republican | 06% | Nov 05 | Nov 05 | Election 2008 | |
| NY-10 | Democrat | 92% | Republican | 06% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-11 | Democrat | 92% | Republican | 07% | Nov 05 | Nov 05 | Election 2008 | |
| NY-11 | Democrat | 77% | Republican | 07% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-12 | Democrat | 89% | Republican | 11% | Nov 05 | Nov 05 | Election 2008 | |
| NY-12 | Democrat | 80% | Republican | 09% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-13 | Democrat | 61% | Republican | 33% | Nov 05 | Nov 05 | Election 2008 | |
| NY-13 | Democrat | 40% | Republican | 48% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-14 | Democrat | 79% | Republican | 19% | Nov 05 | Nov 05 | Election 2008 | |
| NY-14 | Democrat | 76% | Republican | 16% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-15 | Democrat | 88% | Republican | 09% | Nov 05 | Nov 05 | Election 2008 | |
| NY-15 | Democrat | 85% | Republican | 06% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-16 | Democrat | 97% | Republican | 03% | Nov 05 | Nov 05 | Election 2008 | |
| NY-16 | Democrat | 90% | Republican | 03% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-17 | Democrat | 79% | Republican | 21% | Nov 05 | Nov 05 | Election 2008 | |
| NY-17 | Democrat | 76% | Republican | 24% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-18 | Democrat | 68% | Republican | 32% | Nov 05 | Nov 05 | Election 2008 | |
| NY-18 | Democrat | 68% | Republican | 03% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-19 | Democrat | 58% | Republican | 42% | Nov 05 | Nov 05 | Election 2008 | |
| NY-19 | Democrat | 51% | Republican | 41% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-20 | Democrat | 62% | Republican | 38% | Nov 05 | Nov 05 | Election 2008 | |
| NY-20 | Democrat | 49% | Republican | 40% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-21 | Democrat | 62% | Republican | 35% | Nov 05 | Nov 05 | Election 2008 | |
| NY-21 | Democrat | 65% | Republican | 22% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-22 | Democrat | 66% | Republican | 34% | Nov 05 | Nov 05 | Election 2008 | |
| NY-22 | Democrat | 86% | Republican | 00% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-23 | Democrat | 35% | Republican | 65% | Nov 05 | Nov 05 | Election 2008 | |
| NY-23 | Democrat | 35% | Republican | 53% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-24 | Democrat | 51% | Republican | 49% | Nov 05 | Nov 05 | Election 2008 | |
| NY-24 | Democrat | 54% | Republican | 45% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-25 | Democrat | 55% | Republican | 42% | Nov 05 | Nov 05 | Election 2008 | |
| NY-25 | Democrat | 49% | Republican | 51% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |
| NY-26 | Democrat | 40% | Republican | 55% | Nov 05 | Nov 05 | Election 2008 | |
| NY-26 | _NY-26!D | 34% | _NY-26!R | 48% | Oct 28 | Oct 29 | SurveyUSA | |
| NY-26 | _NY-26!D | 37% | _NY-26!R | 48% | Sep 24 | Sep 25 | SurveyUSA | |
| NY-26 | Democrat | 41% | Republican | 45% | Jan 01 | Jan 01 | Election 2006 | |
| Cong. Distr. | Democrat | D-pct | Republican | R-pct | Start | End | Pollster | |