A Federal primary election is held every even-numbered year on the first Tuesday after the first Monday in June. A Federal general election is held every even-numbered year on the first Tuesday after the first Monday in November. The presidential elections are combined with the congressional, statewide, state district, and county elections.
There is no party registration in Montana. Individuals who vote in a primary election are given all the parties' ballots, and can choose in private which party ballot they wish to vote. They return the voted ballots to an election judge in one sleeve, and the unvoted party ballots in a separate sleeve. Voters in a primary election cannot vote more than one party's ballots