Primary season is upon us, so let us note that different states have different rules about their primaries. In fact some states have different rules for state and congressional primaries vs. presidential primaries. Here is the official list from the National Conference of State Legislatures. It has all the details, with 50 footnotes if you want to get down in the weeds.
Most states fall into one of seven categories, as follows:
Columns two through eight below indicate which category a state is in (or, which one it comes closest to fitting). The last column is "Yes" if the presidential primary follows the same rules as the state and congressional primaries. A "No" means the rules for presidential primaries are different. Here are the basic principles for each state for state and congressional primaries.
State | Closed | Semiclosed | Semiopen | Open for inds. | Open | Top two | Top four | Pres, too? |
Alabama | Yes | |||||||
Alaska | No | |||||||
Arizona | No | |||||||
Arkansas | Yes | |||||||
California | No | |||||||
Colorado | Yes | |||||||
Connecticut | No | |||||||
Delaware | Yes | |||||||
Florida | Yes | |||||||
Georgia | Yes | |||||||
Hawaii | No | |||||||
Idaho | Yes | |||||||
Illinois | Yes | |||||||
Indiana | Yes | |||||||
Iowa | Yes | |||||||
Kansas | No | |||||||
Kentucky | Yes | |||||||
Louisiana | No | |||||||
Maine | No | |||||||
Maryland | Yes | |||||||
Massachusetts | Yes | |||||||
Michigan | No | |||||||
Minnesota | Yes | |||||||
Mississippi | Yes | |||||||
Missouri | Yes | |||||||
Montana | Yes | |||||||
Nebraska | No | |||||||
Nevada | Yes | |||||||
New Hampshire | Yes | |||||||
New Jersey | No | |||||||
New Mexico | Yes | |||||||
New York | Yes | |||||||
North Carolina | Yes | |||||||
North Dakota | No | |||||||
Ohio | Yes | |||||||
Oklahoma | Yes | |||||||
Oregon | Yes | |||||||
Pennsylvania | Yes | |||||||
Rhode Island | Yes | |||||||
South Carolina | Yes | |||||||
South Dakota | Yes | |||||||
Tennessee | Yes | |||||||
Texas | Yes | |||||||
Utah | Yes | |||||||
Vermont | Yes | |||||||
Virginia | Yes | |||||||
Washington | No | |||||||
West Virginia | Yes | |||||||
Wisconsin | Yes | |||||||
Wyoming | Yes |
The (semi)open primaries open the opportunity for ratf**king. For example, in Montana, it is clear that three-term senator Jon Tester will be the Democratic nominee. So far, no one else besides Tester has even filed to enter the Democratic senatorial primary in Montana, although the filing deadline is March 11. If Tester is the only candidate and he gets at least one vote (for example, his own) he will be the Democratic nominee.
However, it is not out of the question that some Democratic-aligned group could decide to engage in some shenanigans. It could urge Democrats to simply ask for a Republican ballot on Primary Day and vote for Matt Rosendale, since he is by far the easier candidate to beat. That also means they can't vote for Joe Biden, but Primary Day in Montana is June 4, so by then Biden will have locked the nomination up. It is unlikely that the Montana Democratic Party would want to be caught red-handed doing this, but some outside group could take the lead. There is nothing illegal about buying ads or sending out flyers telling Democrats and independents that they are allowed to vote in the Republican primary and that voting for Rosendale will help Tester. The campaign will come out, of course, but if there is a Montana super PAC called "Citizens for Montana" with unknown funders, then so what? (V)