Voter Registration in Colorado

Voter Registration in Colorado

The Colorado Department of State (DOS) provides several ways to register to vote, including online registration.

Colorado residents can also register to vote by mail, e-mail, fax, or in person at various locations throughout the state, including the Colorado Department of Revenue - Division of Motor Vehicles (DMV).

Voter Eligibility in Colorado

In order to register to vote in Colorado, you must be:

  • A United States citizen.
  • A Colorado resident who has lived in the state for at least 22 days before the election in which you plan to vote.
  • At least 18 years old by the date of the next election.

If you have been convicted of a felony, you CANNOT vote if you are:

  • Serving any sentence, such as jail term, work release, etc.
  • On parole.

Register to Vote in Colorado

Colorado residents can register to vote:

  • Online.
    • Only if you have a CO driver’s license or ID card issued by the Colorado DMV.
  • By mail, by fax, or by e-mail.
  • In person.


To register to vote online, you MUST have either:

  • A valid Colorado driver’s license.
  • A Colorado ID card issued by the DMV.

You will have to enter your driver’s license or ID card number for verification before you can proceed with the rest of the registration process.

To register to vote online, go to the Go Vote Colorado website.

By Mail, Fax, or E-mail

You can submit the Colorado Voter Registration Form* to your county clerk’s office:

  • By mail.
  • By fax.
  • By e-mail.

* You can also pick up this form from your county clerk’s office.

In Person

You can register to vote in person at:

  • A CO DMV office when you apply for or renew your driver’s license.
  • Public assistance offices.
  • Military recruitment offices.
  • Voter service and polling centers.

Military & Out-of-State CO Voters

Members of the military, Colorado residents living overseas, and out-of-state college students can also register to vote in Colorado.

Military & Overseas Voter Registration

If you are a Colorado citizen in the military or living overseas, you can register to vote using:

NOTE: If you are an overseas voter, provide both your residential CO address AND your current overseas mailing address.

Deadlines and Ballots

You can register until and including the date of the election.

However, if you are requesting a ballot by mail, your registration form must be received by the 7th day before the election.

NOTE: You can also receive your ballot by fax or e-mail. To receive your ballot by fax, you’ll need to give a fax number to your county elections office and include the international prefix and country code.

To request a ballot by e-mail, you’ll need to provide an e-mail address where the ballot can be sent.

Out-of-State Residents

Out-of-state residents who maintain their permanent residence in Colorado can register to vote online, by mail, by fax, or by e-mail. Please see our “Register to Vote in Colorado” section above to learn how.

College Students

If you are a college student from Colorado, you can choose where to register to vote:

  • From your permanent home address.
  • In the county and/or state where you attend school.

You CANNOT register to vote in more than one location.

Deadlines to Register to Vote in CO

Colorado voter registration deadlines are based on the registration method. You can register:

  • By mail: Until 22 days before the election.
  • At a voter registration agency, DMV office, or registration drive: Until 22 days before the election.
  • Online: Until the 8th day prior to the election.
  • At a voter service and polling center: Up to and including Election Day.

If you want to change or remove your party affiliation, the deadline is 29 days before Election Day. (See below for information on updating your registration.)

Remember, when you go to vote, bring a current proof of ID.

Change Your CO Voter Registration

If you move or change your name, you must to update your Colorado voter registration information.

Address Changes

When you move to a new address, you can update your voter registration in several ways:

If you need to change your address close to or on Election Day, you can do so in person at a voter service and polling center. Contact your county clerk for more information.

Name Changes

To change your name on your voter registration, you must re-submit the Colorado Voter Registration Form.

See “Register to Vote in Colorado” above.

CO Voter Registration Card

You can access and print your voter record from the Go Vote Colorado website.

For a copy of your certificate of registration, contact your county clerk’s office.

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