IOWA

Primaries:

• Democratic congressional and state primaries: mixed
  

• Republican congressional and state primaries: mixed

• Democratic Presidential primary: mixed

• Republican Presidential primary: mixed
  

Primary Type Definitions

Registration:

• Voters may or may not choose to affiliate with a political party, however, affiliation with a party is required to vote in primary elections.

• 36% of Iowa voters are not affiliated with a political party.

Details of voting in congressional and state primary elections:

• Voters must be registered with a party in order to vote in a primary or caucus, but voters are allowed to change affiliation before the primary election or at the polls on primary day.