Colorado - Open Primaries
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Primary Elections State By State



  • Democratic congressional and state primaries: open
  • Republican congressional and state primaries: open
  • Democratic Presidential primary: open
  • Republican Presidential primary: open


Primary Type Definitions



  • As of 2016, Colorado has an open primary for presidential, federal, and state elections.
  • 29% of registered voters in Colorado are unaffiliated or Independent.


Details of voting in congressional and state primary elections:

  • Voters do not declare affiliation with a party in order to vote, but they must choose one party's ballot.
  • minor parties may not allow unaffiliated voters to vote in their primaries.

State Partners:

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published this page in What's happening in your state? 2015-06-09 16:41:58 -0400