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Colorado offers online voter registration. You can register by mail to vote in Colorado by printing a voter registration form, filling it out, and mailing it to your local election office. You can also register to vote in person if you prefer. All voters in Colorado who register before October 31 will receive a mail ballot. You can also register to vote in person through Election Day if you prefer.

Who can register to vote?

To register in Colorado you must:
  • be a citizen of the United States
  • be a resident of Colorado for at least 22 days immediately before the election in which you intend to vote
  • be at least 16 years old, but must be at least eighteen on or before election day to be eligible to vote.
  • not be serving a sentence of detention or confinement for a felony conviction

Can I register to vote online?

  • Colorado offers online voter registration.
  • You should know: you need a Colorado driver's license or ID card or a valid Social Security Number to use Colorado's online voter registration system. If you don't have a Colorado-issued ID or Social Security Number, you can still register by mail to vote.

Can I submit voter registration forms by mail?

Use the National Voter Registration Form

  1. Print and fill out the National Voter Registration Form.
  2. Box 6 - ID Number: Your completed voter registration form must contain your Colorado driver's license number or identification card number. If you do not have a driver's license or CO-issued identification, you must include the last four digits of your Social Security number. If you do not have a driver's license or a CO-issued identification or a Social Security number, please write "NONE" on the form. A unique identifying number will be assigned by the State.
  3. Box 7 - Choice of Party: Colorado does NOT require that you register with a party to participate in partisan primary elections. If you do not affiliate with a party you may choose the party primary you wish to vote in. If you choose to register with a party you can only vote in that party's primary. If an unaffiliated voter returns a ballot with more than one political party, the ballot will be rejected and none of the votes will be counted.
  4. Box 8 - Race or Ethnic Group: Leave blank. This information is not required.
  5. Review the "Who can register to vote?" section above and check that you're eligible.
  6. Sign the form.
  7. Send the completed form to your local election office
  8. If you are registering to vote for the first time in your jurisdiction and are mailing this registration application, Federal law requires you to show proof of identification the first time you vote. Proof of identification includes:
    • A current and valid photo identification or
    • A current utility bill, bank statement, government check, paycheck or government document that shows your name and address.
    • More information here.

Can I register to vote on Election Day?

Colorado does offer in person registration on Election Day.

Can I submit voter registration forms in person?


What are key deadlines for the November 2022 election?


How do I get help registering to vote?

If you’d like more help planning how to register, TurboVote can walk you through the process! They can also help you start the absentee/mail-in ballot request process, send you election reminders, and more.

How do I vote if I'm in the military or live overseas?

Active-duty military, their families, and overseas citizens can register to vote and request their absentee ballot using the Federal Post Card Application (FPCA). The FPCA process is done by mail, but your state may offer other options to request and return ballots. Please contact your local election office for more information about delivery and return methods, including email, fax, and state online portals. To follow the FPCA process:
  1. Fill out the Federal Post Card Application (FPCA), or download a copy. Your local election office may have questions, so please provide an email address or phone number where they can reach you.
  2. Send the application to your local election office.
  3. It is never too early to submit an FPCA! Please do so as soon as possible.
  4. Please fill out and send back your ballot as soon as you receive it.
  5. States begin mailing absentee ballots at least 45 days before Election Day. If you haven't received your ballot by 30 days before Election Day, contact your local election office.
If after submitting your FPCA, your ballot does not arrive, contact your local election office first. Then:
  • You can still vote using the Federal Write-In Absentee Ballot (FWAB). Print, sign, and mail your FWAB to your local election office.
  • If you mail a FWAB and then receive your regular absentee ballot, you should complete and mail your absentee ballot also. Election officials will ensure that only one ballot is counted.
The Federal Voting Assistance Program offers additional information on military and overseas voting in Colorado. You can also call 1-800-438-VOTE (8683) or email vote@fvap.gov

How can I check my voter registration status?

You can look up your voter registration record and verify that your information is correct using Colorado's voter registration lookup tool.

How do I contact my state election office?


Can I trust this information?

These guides are researched, written, and updated by Democracy Works, a non-partisan 501(c)(3) registered non-profit organization. The information in these guides originates from official state sources and is reviewed by state election offices. The guides also link to authoritative state and local resources to provide additional information.

How do I report an issue with the information provided on this page?

Email htv@democracy.works with questions, concerns or feedback about the voting information on this page.