PRIMARY ELECTIONS STATE BY STATE

Idaho

Primaries:

  • Congressional and state primaries: Closed*
  • Presidential primaries: Closed*

*The Democratic party has amended its primary rules to allow independents to participate.

Primary Type Definitions
Idaho

Registration:

  • Voters may or may not choose to affiliate with a political party when they register to vote.
  • 35% of registered voters in Idaho are unaffiliated.
 

State Partners:

Reclaim Idaho
Idahoans for Open Primaries

Details of voting in congressional and state primary elections:

  • The Democratic Party allows registered Democrats and unaffiliated voters to participate in their primary.
  • The Republican Party only allows registered Republicans to participate in their primary.
  • The Constitution Party allows unaffiliated voters to participate in their primary.
  • Idaho offers same-day voter registration, so an unaffiliated voter may affiliate with a party up to or on election day and vote on that party's ballot.
  • Party affiliated voters seeking to change their affiliation must do so before the 10th Friday before an election

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