Published: Oct. 9, 2020


Voting in Colorado 

The Basics

  • Colorado uses a vote-by-mail system for all elections and has since 2013. The state is regarded as a leader in vote-by-mail elections and security.
  • Colorado permits online voter registration. Whether you’re voting in Colorado or via absentee ballot from your home state, there is a specific way you must list your on-campus address in your voter registration so your ballot can find you. View this student voting page from Boulder County to learn more.
  • If voting in person, voters are required to present a valid form of identification at the polls.
  • Colorado allows same-day voter registration and early voting same-day registration. If you want to vote in-person on Nov. 3 and haven't registered yet, you'll be able to do so at the Vote Center where you cast your ballot. 

Voting and Ballot Information

  • Ballots will be mailed beginning on Oct. 9. You can vote immediately once you receive your ballot. 
  • If you prefer to vote in person, Vote Centers (including on-campus at the University Memorial Center) will open on Oct. 19.
  • Oct. 26 is the last day to register and still be mailed a ballot. It's also the last day to request that a replacement ballot. If your ballot is damaged, stained or if you made a mistake, you may request a replacement from your county clerk.
  • There are 24-hour ballot drop boxes and USPS post boxes to return your ballot in every county. If voting with a Colorado mail ballot on campus, simply drop it off at the 24-hour drop box at the University Memorial Center (outside near Euclid Avenue) or at Williams Village near the bus stop at 500 30th Street. 
    • These boxes may be used by Colorado voters only.
    • Out-of-county ballots will be rerouted to the correct county.

Don’t be disqualified!

  • Ballots must be received by 7 p.m. MT on Nov. 3, 2020 to be counted
  • Make sure to sign the back of the envelope
  • Use ink and only fill in the bubble that you want to select (like a multiple choice test!)
  • Read the instructions that came with your ballot carefully to avoid common errors that can disqualify your vote, such as leaving stray marks, not completely filling in the bubble, forgetting to sign the back of your ballot or enclosing it in the incorrect envelope

Are you voting for a different state?

If voting on an out-of-state ballot, please follow their return ballot instructions. View specific information and mailing deadlines by state »

Absentee ballot applications must be received by the deadline, not just postmarked by the deadline.