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Colorado’s new Presidential Primary – How to Participate

Post Date:02/05/2020 10:15 AM

Colorado will hold its first Presidential Primary Election in two decades on March 3, 2020 – Super Tuesday! Political parties still hold party caucuses in March (check your local party website) and Colorado will still have a primary for statewide and local candidates in June. But ballots for the stand-alone Presidential Primary are mailed to voters beginning February 10. Here is what you need to know to participate:

  • Presidential primaries in Colorado are only held by the Democratic and Republican Parties. You must be registered as a Democrat, Republican, or Unaffiliated to participate.
  • Registered Democrats will receive only the Democratic Party ballot. Registered Republicans will receive only the Republican Party ballot.
  • Unaffiliated voters will be mailed both party ballots but can only vote and return one.
  • ***NEW*** Voters who will turn 18-years-old by the General Election, Tuesday, November 3, 2020 – Can now VOTE in Primaries! Get registered today.
  • There is no voter registration deadline. You can register and vote up to and including Election Day.

If you have a Colorado Driver’s License or State ID, you can register to vote or check your registration at If you do not have a license or state ID, you can register by mail (downloadable form online at or in-person at any Boulder County Clerk & Recorder’s office (Boulder, Longmont, Lafayette).

For more voter and election information, visit or call 303.413.7740.

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