Voting in Colorado

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Election Dates

General Election Date
Voter Registration Deadline (online, in-person, by mail - postmarked)

Vote By Mail Deadlines

Deadline to Request Ballot (Received by)
Deadline to Return Ballot (Received By)

Early Voting Dates

Early Voting Begins
Early Voting Ends

Polling place hours: 7 a.m. to 7 p.m.

Register to Vote

How to Vote in Colorado

Learn about all the options to vote in Colorado to make a plan to vote that works for you!

Colorado is a vote by mail state. This means that all registered voters will receive a mail-in ballot to the address on their voter registration. If you have moved you must update your registration.

Frequently Asked Questions

Colorado Board of Elections Phone Number: (303) 894-2200

Colorado Board of Elections Website

Having trouble at the polls?

Call or text: 1-866-OUR-VOTE

Register to Vote in Colorado

Whether you are registering to vote for the first time, or need to update your address, name or party affiliation - we've got you covered!

Am I Registered?

Not sure if you are eligible to vote due to a felony conviction?
Click here to learn more.

Vote By Mail

Request and track

Notice: Mail-in voting is a convenient and safe way to vote, but your ballot might not count if it’s submitted late or with errors. So follow the directions below on how to vote early or absentee and make your vote count in Colorado.

Vote By Mail Deadlines

Deadline to Request Ballot (Received by)
Deadline to Return Ballot (Received By)

How Vote By Mail Works in Colorado

Colorado has a one step vote by mail process. It is a vote-by-mail state, meaning that all registered voters receive a ballot in the mail. The deadline to register to vote and receive a ballot in the mail is October 30th, 8 days before Election Day.

After you complete your ballot, be sure to return it ASAP!

  • Return in person by Election Day, November 7th at 7 p.m. You can return to any county drop boxes, Voter Service and Polling Center, and your county election office.
  • Or stamp and return your ballot by mail - your ballot must be mailed so that it is received by Election Day, November 7th. We recommend mailing your ballot at least two weeks before as the post office is not always reliable. The best intentions or postmark will not matter if your ballot is received after Election Day - your ballot will not count.

Need your ballot sent to a different address? Apply for a ballot here ASAP (deadline is 8 days before Election Day) and follow the steps listed above.

Don't worry if you miss the voter registration mail-in ballot deadline - you may still register to vote through Election Day and vote in person at a vote center in your county.

Where to Sign Your Ballot

Remember to sign your return ballot.

After completing your ballot, put it into the return envelope provided by the state. Sign the self-affirmation on the return envelope.

Be sure that your signature matches your signature on file with the state! If you registered online or at the DMV, check the signature on your license. If the signature does not match, your ballot could be tossed and will not count.

How You Can Return Your Mail-in Ballot

If you return your ballot by mail, you must add a stamp when mailing in your ballot.

You can also drop off your ballot in person at your drop box, early voting locations, or polling place.

Can Someone Else Return Your Ballot For You?

Any designated person can drop off a ballot for you.

Track Your Ballot

Track your ballot by clicking here.

Haven't used your ballot?

If you decide to vote in person rather than vote by mail, go to a Voter Service and Polling Center in your county to vote in person. If possible, bring your ballot to discard at the Voter Service Center. Even if you do not return the mail ballot, you may still vote in person.

Opportunities to Fix Challenges to Your Ballot

Colorado does offer voters a chance to address challenges to their ballot.

Your state has a cure period, which means you can “cure” a challenge to the signature on your ballot if it was done incorrectly. You will be contacted if there is a challenge to your signature through Election Day.

You will be notified by mail within two days of the election. You must return the confirmation form accompanying the letter to the county clerk and recorder within eight days after Election Day to count.

You may get a phone call from a number you do not recognize with a notification that you need to cure your ballot. Be sure to pick up so you don’t miss your chance to make sure that your ballot is counted.

Voter ID

Do Voters Need ID?

Colorado voters must show ID at the polls to vote. All voters are sent a mail-in ballot to the address associated with their voter registration, no ID is required if voting-by-mail.

If the ID displays an address, the address must be a CO address to be accepted

  • A current Colorado driver’s license or ID card
  • A current U.S. passport
  • A current Medicare or Medicaid card
  • Certified U.S. birth certificate or naturalization document
  • Group residential care facility verification
  • Tribal certificate
  • Name and address on copy of utility bill, bank statement, paycheck or government document including check within the last 60 days
  • A valid employee identification card with a photograph of the eligible elector issued by any branch, department, agency, or entity of the United States government or of this state, or by any county, municipality, board, authority, or other political subdivision of this state
  • A current US military or veteran ID with photo
  • A current student ID issued by a postsecondary school in Colorado with photo


Voter ID in Colorado

Find Your Ballot

Enter your address below to see what you can expect on Election Day.


Automatic Registration

Your state automatically registers people to vote at their address of record when they interact with certain state agencies. If you have moved, changed your name or want to add a political party selection, you must update your voter registration. Click here to check to see if you are registered to vote, and update your registration if needed.

Election Day Registration

You can register to vote and cast your ballot on Election Day at your polling place or local elections office. Bring a valid ID and proof of residence with you.

Early Voting

Early Voting Dates

Voting Begins
Voting Ends

You can vote early in Colorado

You can return your mail-in ballot to your early voting site.

You can register to vote, vote early in person, or return your mail-in ballot at a Voter Service and Polling Center near you. Click here to find your Voter Service and Polling Center.


Some states have laws that specifically allow citizens to preregister at a certain age while others allow registration as long as you’re 18 by the next election. Preregistration means you’ll be automatically registered to vote on your 18th birthday without taking any additional steps.

In Colorado, you can preregister to vote if you are 18 by the next election. Register to vote today!

Some states even let you vote in their primaries at 17 if you’ll be 18 by the general election so you can participate in the whole process!

You can not vote in the Colorado primaries if you are 17 by the next election.