Arizona

Primaries: 

• Democratic congressional and state primaries: mixed 

• Republican congressional and state primaries: mixed

• Democratic Presidential primary: closed

• Republican Presidential primary: closed

Primary Type Definitions

Registration:

• Optional party affiliation. Voters are given the option to affiliate or not to affiliate with a political party on the registration form.

• 33% of registered voters in Arizona are unaffiliated or independent.

Details of state and local primary elections:

• Unaffiliated voters may choose which party's ballot they will vote on.

• Party members may only vote on their party's ballot.

• Voter registration closes 29 days before the primary election.