Voting in Colorado
- Register by
- November 3
- Mailed ballot must arrive by
- November 3, 7pm
See every race and candidate on your Colorado ballot, and where each one stands, before you vote.
Plan your ballot →How to cast your ballot
By mail
Every registered voter is mailed a ballot automatically.
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.
In person
- Polls open on election day
- 7am – 7pm
- Or vote early
- In the windows shown above
What counts as ID
In-Person Voting ID Requirements (Colorado)
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 of ID include:
- Valid Colorado driver's license
- Valid ID card issued by the Colorado Department of Revenue
- Valid U.S. passport
- Valid employee ID with photo issued by any entity of the U.S. government or Colorado
- Valid pilot's license issued by the FAA or other authorized agency of the U.S.
- U.S. military ID with photo
- ID card issued by a federally recognized tribal government
- Medicare or Medicaid card
- Certified copy of your U.S. 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
- Current utility bill, bank statement, government check, paycheck, or other government document showing name and address (issued within the last 60 days)
- Division of Youth Services identification card issued by the Colorado Department of Human Services
Voters without ID:
If you are unable to provide ID, you will be able to vote a provisional ballot. After Election Day, your local election official will evaluate if you are eligible to vote and determine if your ballot should be counted.
Before you can vote
Registering
Ways to register:
Colorado lets you pre-register from age 15, so you are on the roll the moment you turn 18.
Who can register, and what you need
To register in Colorado you must:
- be a United States citizen
- be a Colorado resident for at least 22 days immediately before the election in which you intend to vote, UNLESS that election is a presidential general election. In this case, you may be a resident for less than 22 days and cast a provisional ballot in person for president and vice president candidates ONLY
- be at least 15 years old, and you must be at least 18 on or before Election Day to be eligible to vote
- not be serving a sentence of detention or confinement for a felony conviction
Which primary can you vote in?
You are NOT required to register with a party to participate in Colorado partisan primary elections. If you do not register with a party, you may choose the party primary you wish to vote in. If you choose to register with a party, you can only vote in that party's primary. If you are an unaffiliated voter and return a ballot with more than one political party, the ballot will be rejected and none of the votes will be counted.
Dates, deadlines and rules come from DemocracyWorks, last refreshed August 27, 2026; poll hours from our own election guide. Rules change — check with your election office before you rely on a date.
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