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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!