How to register to vote in Colorado

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.

Who can 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 you must be at least 17 and turning 18 on or before the date of the next general election to be eligible to vote in a primary election, and at least 18 to be eligible to vote in any other election
  • not be serving a sentence of detention or confinement for a felony conviction
  • *find more information on voting rights restoration here

Online voter registration

  • Colorado offers online voter registration.
  • You should know: you need a Colorado ID to use Colorado’s online voter registration system. If you don’t have a Colorado-issued ID, you can still register by mail to vote.
  • You can register online to vote until Monday, October 26, 2020. If you miss this deadline, you will not receive a ballot by mail, but you can still vote in person at a voter service and polling center.

By-mail voter registration

Use the Colorado voter registration form

You can also register to vote using the Colorado voter registration form. Be sure to read the instructions carefully and fill it out completely. Send the completed form to your local election official. To register by mail, the form must be received by Monday, October 26, 2020. If you miss this deadline, you will not receive a ballot by mail, but you can still vote in person at a voter service and polling center.

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 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.
  4. Box 8 – Race or Ethnic Group: Leave blank. This information is not required.
  5. Review the “Who can vote?” section above and check that you’re eligible.
  6. Sign the form.
  7. Send the completed form to your local election official. To register by mail, the form must be received by Monday, October 26, 2020. If you miss this deadline, you will not receive a ballot by mail, but you can still vote in person at a voter service and polling center.
  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.

Election Day registration

Colorado does offer registration on Election Day.

In-person voter registration

  • You can also register to vote in person. Contact your local election office for information on when and where to register to vote. The deadline to register to vote in person is 7:00 p.m. on Tuesday, November 3, 2020.
  • You can also register to vote and cast a ballot in person on Election Day.
  • Learn more by visiting the Secretary of State for Colorado or contacting your local election official.

Get step-by-step help

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

Military and overseas voters

Active-duty military, their families, and overseas citizens can register to vote and request their absentee ballot using the Federal Post Card Application (FPCA). To do so:

  1. Fill out the Federal Post Card Application (FPCA), or download a copy. Your election official may have questions, so please provide an email address or phone number where they can reach you.
  2. Send the application to your election official.
  3. It is never too early to submit an FPCA! Please do so as soon as possible. You can look up recommended mailing dates by country and region.
  4. Please fill out and send back your ballot as soon as you receive it. Following are recommended return dates to make sure your ballot arrives at your election office on time:
    • 35 days before election – On a ship at sea: September 28, 2020
    • 30 days before election – Outside of the US: October 2, 2020
    • 11 days before the election – Stateside: October 23, 2020
  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 election official 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 – FVAP.gov offers additional information on military and overseas voting in Colorado. You can also call 1-800-438-VOTE or email vote@fvap.gov

Check your 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.

Dates and deadlines

  • Election day is Tuesday, November 3, 2020.
  • The deadline to register online to vote is Monday, October 26, 2020. If you miss this deadline, you will not receive a ballot by mail, but you can still vote in person at a voter service and polling center.
  • The deadline for registering by mail to vote is (received by) Monday, October 26, 2020. If you miss this deadline, you will not receive a ballot by mail, but you can still vote in person at a voter service and polling center.
  • The deadline to register to vote in person is 7:00 p.m. on Tuesday, November 3, 2020.
  • The early voting period runs from Monday, October 19, 2020 to Monday, November 2, 2020, but dates and hours may vary based on where you live.
  • You can also register and vote on Election Day.

Election contact information for Colorado

Address:
Secretary of State
1700 Broadway, Suite 200
Denver, CO 80290

Phone Number:
303-894-2200