George LeMieux, who was appointed to the Senate by former Florida governor Charlie Crist but didn't run for a full term in 2010 decided to go for it now. But he was getting nowhere in the polls and has now officially dropped out of the race. As a consequence it is now virtually certain that Sen. Bill Nelson(D-FL) will face Rep. Connie Mack IV (whose real name is Cornelius McGillicuddy IV).
| State | Obama | Romney | Start | End | Pollster | |
| Iowa | 45% | 44% | Jun 18 | Jun 18 | We Ask America | |
| Michigan | 43% | 45% | Jun 18 | Jun 18 | We Ask America | |
| Montana | 42% | 51% | Jun 18 | Jun 18 | Rasmussen | |
| Washington | 54% | 41% | Jun 14 | Jun 17 | PPP | |
| Wisconsin | 49% | 43% | Jun 13 | Jun 16 | Marquette Law School |