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How & Where to Vote

Find out where to vote, how to vote, how to vote early, and how to vote by mail.

Register to Vote

Register to vote in Colorado, or learn more about voter ID & rights.

Election Details

Visit the Colorado election website or call (303) 894-2200 to learn more about your states voting details.

Have more questions about voting?

Read our voting FAQ

Important Dates - Presidential Primary

Primary Election Date
Primary Registration Deadline (by mail)
Primary Type

Voting Information for Colorado

Don’t miss your next election!

Don’t miss your next election! Colorado is a vote-by-mail state. As long as your registration lists your current address you will receive a ballot. If you have moved please be sure to update your registration at least 8 days before the next election to receive a ballot by mail. (Click here to register to vote.) You may go to your local elections office and designated polling centers to register to vote in person through election day.

Colorado’s presidential primary election is March 3, 2020.

Presidential Primaries

Colorado holds semi-closed primaries.  Voters must be registered with their party of choice or unafilliated with a party. When registering, unaffiliated voters can select to receive ballots from all parties by mail and later decide which ballot to use and return.

Voters that want to change their party for must do so by February 3 for the March 3 primary.


Statewide Primaries

Some congressional seats, state offices and constitutional amendments may be included on the ballot.

Find Your Representatives

Early Voting + Absentee Voting

Early Voting Dates: N/A, Vote by mail 

All voters registered at least 8 days before the election (2/24/2020) in Colorado should receive a vote-by-mail ballot. No excuse required.  If you have not received your ballot you can check its status here.

Voters may return ballots by mail, postmarked the day before the election, or in-person to their county clerk’s office, stand alone drop box locations, or Voter Service and Polling Center by Election Day. Click here to find your local locations.

Alternatively you can vote and register to vote in-person at Voter Service and Polling Centers on or before election day.

Request Absentee Ballot

Voter ID + Eligibility for Colorado

Do Voters Need ID?

  • Yes, voters need an ID
  • Multiple forms of ID accepted
  • First time voters need ID
  • Student IDs accepted

Voter Rights

Find out more about your rights in Colorado.


  • The pre-registration age is 16
  • You can vote at age 17 in primary elections if you're 18 by the general election