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Colorado Presidential Primary

  1. March 3, 2020 (Super Tuesday)

    • Ballots mailed to voters beginning February 10
    • 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.
    • Up until February 3, unaffiliated voters can also pre-designate their ballot preference, if they wish, by updating their voter registration. This will eliminate getting two ballots in the mail.
    • February 3 is the deadline to switch party affiliation to vote in a different primary.
    • ***NEW*** 17-year-olds who will turn 18 years old by the General Election, Tuesday, November 3, 2020 can vote in primaries!
    For full information on the Colorado Presidential Primaries, visit or call 303-413-7740.