Colorado
1 Check ID Rules
Voting in Person
Colorado requests ID if you vote in person. If you don’t have an ID, sign a form (called an affidavit) and vote a provisional ballot.
Accepted IDs
If your ID has an address, it must be in Colorado:
Must be unexpired or have no expiration date
- Colorado driver’s license
- Colorado state ID card
- US passport or passport card
- Tribal identification or CDIB issued by federally recognized Tribe, the BIA, Indian Health Service, or other federal agency located in Colorado
- Student photo ID issued by higher education institution in Colorado
- Military or veteran photo ID
- Certified US naturalization document
- Certified US birth certificate
- Medicare or Medicaid card
- Employee photo ID issued by US, Colorado, or local government
- Pilot’s license issued by US government
- Division of Youth Services ID issued by Colorado DHS
Dated within 60 days
- Utility bill
- Bank statement
- Paycheck
- Government check
- Other government document
Voting by Mail
Colorado automatically sends mail ballots to all registered voters. There is no need to request your ballot and no excuse is required to vote by mail.
You will be notified if you need to provide ID with your ballot.
Note that the signature on your ballot must match your signature on file with the state.
Frequently Asked Questions
What if I don’t have the right ID to vote in Colorado?
Registered Colorado voters must show ID to vote at the polls.
If you do not present an acceptable ID at the polling place, you may cast a provisional ballot. In order for your ballot to be counted, you must complete a provisional ballot affidavit.
After Election Day, the election official will determine if you were eligible to vote and if your provisional ballot will be counted.
Do I need a “REAL ID” to vote in Colorado?
You do not need a “REAL ID” to vote in Colorado.
REAL ID is a set of national security standards for states to follow when they issue driver’s licenses and state ID cards. Your ID will show a star if it meets REAL ID standards.
Applying for a REAL ID requires you to appear in person with a variety of documents to prove your identity.
Colorado now issues only REAL ID-compliant driver’s licenses and state ID cards. If you need to renew your Colorado license or ID (or apply for a new one), you must go through the REAL ID process. Visit the Colorado DMV wesbite to learn more.
2 Register
Who can vote in Colorado?
You need to register before you can vote in Colorado.
You can vote in Colorado if you meet these requirements:
- You are a citizen of the United States.
- You are a resident of Colorado.
- You are at least 18 years of age on Election Day.
You cannot register to vote in Colorado if:
- You are currently serving a sentence for a felony conviction.
- You are under a court order that takes away your right to vote.
How to Register
Required ID Information:
You have to verify your identity when you register to vote!
If you have a driver’s license or state ID card:
- Give your license or ID number on the registration form.
If you do not have either ID:
- Give the last 4 digits of your Social Security number.
- Don’t have a Social Security number? Leave this part of the form blank.
If you do not provide an ID number when you register:
Be ready to show an accepted ID the first time you vote!
Register to Vote Online
You can use the form below to register in Colorado online.
Other Voter Registration Options
- Complete a registration form and send via mail.
- Visit your local election office or a voter registration agency to register in person.
Frequently Asked Questions
Can I register and vote on the same day in Colorado?
Yes, Colorado allows “same day registration” during early voting and on Election Day.
You can register and vote at any vote center.
You will be asked to provide:
- Colorado driver’s license
- Colorado state ID card
- Last four digits of your Social Security number
If they do not have one of these, you can mark that on your registration form and sign an affidavit.
How do I fix or update my voter registration information?
If you cannot find your registration information or if any details are incorrect:
- Update your name, address, or political party affiliation by submitting a new registration.
- Contact your local election office if you have questions or need to make other changes.
Can I register to vote in Colorado if I have been convicted of a crime?
Each state has its own laws about whether citizens with previous criminal convictions can vote.
To check if you can register in Colorado, visit Restore Your Vote.
Can I register to vote in Colorado if I attend college in Colorado?
College students are allowed to vote using their Colorado school residence address.
You can decide whether to register in your home state or where you attend school.
You may only be registered and vote in one location.
Register to Vote in Colorado
Don’t have a state-issued ID? VoteRiders is here to help!
3 Vote
Voting in Person
Colorado requests ID if you vote in person. If you don’t have an ID, sign a form (called an affidavit) and vote a provisional ballot.
Voting by Mail
Colorado automatically sends mail ballots to all registered voters. There is no need to request your ballot and no excuse is required to vote by mail.
You will be notified if you need to provide ID with your ballot.
Note that the signature on your ballot must match your signature on file with the state.
Frequently Asked Questions
Can I fix my Colorado mail ballot if it is rejected?
If your mail ballot is rejected due to a missing or unmatching signature, or failure to enclose a photocopy of an acceptable form of ID with your ballot, if required, you may use Colorado’s TXT2Cure system to resolve those issues and ensure your ballot is counted.
If your signature on your ballot’s identification envelope does not match your signature on file with the state, you will be notified via a letter sent to the address in your registration record. You will also be notified by email, if available. You will be sent notification within three days after the signature deficiency has been confirmed, but no later than two days after Election Day.
A confirmation form accompanying your notification letter must be returned to the county clerk and recorder within eight days after Election Day for your ballot to count. Find your local county clerk and recorder office.
