How to vote in Colorado

This guide contains information about the 2018 midterm election held on November 6. It may be out-of-date.
Election day is Tuesday, November 6. Colorado mails a ballot to every registered voter a few weeks before the election. Keep an eye on the mailbox, and be sure to mail it back or drop it in a drop-box before Election Day! You can also vote in person if you prefer to do so. Colorado offers early voting.

Who can vote

To register in Colorado you must:
  • be a citizen of the United States
  • be a resident of Colorado 22 days prior to the election
  • be at least sixteen years old and understand that you must be eighteen years old to be eligible to vote
  • not be serving a sentence (including parole) for a felony conviction

Vote in person

Vote on election day

Voters registered in Colorado can look up where to vote on Colorado's site or at

Vote early

Colorado voters can also vote before Election Day. The early voting period runs from Monday, October 22 to Monday, November 5, but dates and hours may vary based on where you live. You can look up when and where to vote early at

What to bring

  • If you choose to vote in person in Colorado, you will need to show ID. If your form of identification shows your address, that address must be in the state of Colorado.
  • Acceptable forms include: Colorado driver's license; valid photo ID card issued by the Department of Revenue; US passport; employee ID with photo issued by any entity of the US government or Colorado; pilot's license issued by the FAA or other authorized agency of the US; US military ID with photo; ID card issued by a federally recognized tribal government; Medicare or Medicaid card; certified copy of your US birth certificate; certificate of Degree of Indian or Alaskan Native Blood; certified documentation of naturalization; student ID with photo issued by a Colorado institute of higher education; veteran's ID with photo issued by the VA; or a current utility bill, bank statement, government check, paycheck, or other government document showing name and address (within last 60 days).
  • Voters without ID: If you are unable to provide ID, you will be able to vote a provisional ballot.

Vote by mail

Colorado conducts elections by mail. If you are registered to vote before Monday, October 29, you should expect to receive a ballot at your designated mailing address. You can return your ballot by mail, or find a drop box on Colorado's site or

See what's on the ballot

Learn more about what will be on your ballot at or Ballotpedia.

Get step-by-step help

TurboVote can help you fill out your ballot request form, 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 voters living outside the US 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. When your ballot arrives, read it carefully and follow the instructions to complete it and return 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 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 – offers additional information on military and overseas voting in Colorado.

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 6.
  • The deadline to register online is Monday, October 29.
  • The deadline for registering to vote by mail is Monday, October 29.
  • The deadline to register to vote in person is Tuesday, November 6.
  • The early voting period runs from Monday, October 22 to Monday, November 5, 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

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

Phone Number: