Skip to content
Colorado
Colorado
Voter
Information
Last updated:
Colorado voter registration guide
Colorado voter registration deadlines
- Register to vote (online): Received by October 26, 2020
- Register to vote (by mail): Postmarked by October 26, 2020
- Register to vote (in person): Received by November 3, 2020
Check your Colorado voter registration status
- If you can't remember if you're registered to vote, or you want to make sure your information is correct, you can check your Colorado registration using the Colorado voter registration lookup tool.
- If you're not registered to vote, or you need to update your voter registration information, follow the instructions below.
Colorado voter registration rules
To register in Colorado you must:
- be a citizen of the United States
- be a resident of Colorado 22 days prior to Election Day
- be 18 years old by Election Day (you may pre-register if you are 16). If you are 17, you may vote in a primary if you will turn 18 by the General Election, and
- not be currently incarcerated after being convicted and sentenced for a felony.
Register to vote online in Colorado
- You can register to vote online if you have a Colorado driver's license, driver's permit, or state-issued ID card.
- Visit the Colorado online voter registration tool.
- Fill out all the required fields.
- You will be registered to vote as soon as you finish the workflow.
- You should receive your voter registration card in the mail within 2-3 weeks. If not, you might want to follow up with your Local Election Office.
- The deadline to register to vote online is received by October 26, 2020.
Register to vote by mail in Colorado
- Download and fill out the National Voter Registration Form.
- Box 6 - ID Number: Provide your Colorado driver’s license number or identification number. If you do not have either of these numbers, provide the last 4 digits of your social security number. If you do not have any of these numbers, write "NONE" in this space.
- Box 7 - Choice of Party: You may register with a party. If you leave this section blank you will not be registered with any party.
- Box 8 - Race or Ethnic Group: Leave blank.
- Print, date, and sign the form. If you do not have a printer, you can print the form out at any local library. If you do not have a stamp, you can buy one from any grocery store: just ask the cashier to sell you one.
- Mail your voter registration form to the mailing address below. For faster delivery, send the form directly to your Local Election Office.
- Your voter registration form must be postmarked by October 26, 2020
Register to vote in person in Colorado
- Contact your Local Election Office to find where to register to vote in person.
- Bring your Colorado driver's license or state ID card with you. If you don't have one, bring one photo ID issued by any state or federal government, and bring one document that shows your name and current address. Acceptable documents include a recent utility bill, bank statement, paycheck, residential lease, or any government document that shows your name and address.
Colorado same day registration
- Summary: Colorado has same day registration. You can register and vote during the early voting period and on Election Day.
- Where to go:
Go to your designated voting location. Click here to find out where to vote.
- What to bring:
Bring your Colorado driver's license or state ID card with you. If you don't have one, bring one photo ID issued by any state or federal government, and bring one document that shows your name and current address. Acceptable documents include a recent utility bill, bank statement, paycheck, residential lease, or any government document that shows your name and address.
- Need help? Contact your Local Election Office if you have questions.
Colorado vote by mail guide
The Local Election Office will compare your signature on your voted ballot to state records. If the signatures don't match, your ballot might be rejected. Please sign carefully.
Colorado will send a mail-in ballot to every registered voter ahead of the November 3, 2020 election.
Colorado vote by mail deadlines
- Earliest day to apply: Anytime.
- Request your mail-in ballot (online): N/A
- Request your mail-in ballot (by mail): Received by October 26, 2020
- Request your mail-in ballot (in person): Received by October 26, 2020
- Return your mail-in ballot (by mail): Received by November 3, 2020
- Return your mail-in ballot (in person): Received by November 3, 2020
Colorado vote by mail overview
Voting by mail is not as complicated as you might think. There are only a handful of steps:
- Request your mail-in ballot by the deadline.
- Receive your mail-in ballot via USPS.
- Return your mail-in ballot by the deadline.
Colorado vote by mail rules
- All Colorado elections are held by mail, so you will automatically receive a mail-in ballot at your registered address.
- You can request a one-time absentee ballot if you will be away from home during a specific election.
Colorado vote by mail ID requirements (request)
The signature on your absentee ballot application will be compared to the signature on your voter registration card to ensure they match.
Colorado vote by mail ID requirements (return)
Your signature on the return envelope will be compared to the signature on your voter registration card to ensure they match. If you forget to sign the return envelope, your ballot might be rejected.
Colorado vote by mail directions
- All Colorado elections are held by mail. This means that Colorado will automatically send a mail-in ballot to every registered voter for the November 3, 2020 election.
- If you need to update your mailing address permanently, register to vote again using your new mailing address.
- If you need to update your mailing address temporarily -- because you will be out of town for the November 3, 2020 election -- request a one-time absentee ballot.
Request your mail-in ballot via USPS
- Download the Colorado vote by mail application.
- Fill out all of the required fields.
- Print the application.
- Sign and date your application. This is very important.
- Mail or hand-deliver your completed application directly to your Local Election Office as soon as possible, but no later than the deadline.
- If it’s close to the deadline, call your Local Election Office and see if they will let you submit your application via email or fax.
- The deadline to apply by mail is: received by October 26, 2020.
Request your mail-in ballot in person
- Visit your Local Election Office.
- Ask the clerk to give you an absentee ballot application.
- Fill out all of the required fields.
- Sign and date your application.
- The deadline to apply in person is: received by October 26, 2020.
Receive and return your mail-in ballot
- Carefully read and follow the instructions, and fill out all required fields.
- Sign and date the outside envelope.
- Mail or hand-deliver your ballot to your Local Election Office. You can also hand-deliver your ballot to a state-provided dropbox. You can use our Find Out Where To Vote tool to find an official dropbox.
- If you mail your ballot, it must be received by November 3, 2020.
- If you hand-deliver your ballot, it must be received by November 3, 2020.
- If you miss the deadline – or forget to sign the outside envelope – your vote will not be counted.
Additional Colorado voter information
Colorado early voting
- Early voting starts: 15 days before Election Day
- Early voting ends: 1 day before Election Day
- What to bring: You must show a current ID if you vote in person. You can show a photo ID issued by Colorado or the federal government, or an official document (such as utility bill, bank statement, or government document) that shows your name and address. Student ID is accepted as long as it is issued by a Colorado college or university.
Colorado voter id
- ID requirements for voting in person: You must show a current ID if you vote in person. You can show a photo ID issued by Colorado or the federal government, or an official document (such as utility bill, bank statement, or government document) that shows your name and address. Student ID is accepted as long as it is issued by a Colorado college or university.
- ID requirements for vote by mail request: The signature on your absentee ballot application will be compared to the signature on your voter registration card to ensure they match.
- ID requirements for vote by mail return: Your signature on the return envelope will be compared to the signature on your voter registration card to ensure they match. If you forget to sign the return envelope, your ballot might be rejected.
Local Election Office
Contact your Local Election Office if you have questions.
Statewide election office
This is the statewide agency that is ultimately responsible for Colorado elections. You can contact them with questions, but your Local Election Office will probably respond faster.
Colorado Secretary of State 1700 Broadway, Suite 200 Denver, CO 80290
Offsite links
- Check your voter registration directly with Colorado.
- You have the right to vote. If anyone tries to stop you, call or text the National Election Protection Hotline. Their number is 866-OUR-VOTE (866-687-8683).