Voting in Colorado
Voter Registration In Colorado
Who Can Register In Colorado
To register to vote in Colorado, you must:
- Be a U.S. citizen
- Be a resident of Colorado for at least 22 days immediately before the election in which you intend to vote
- Be 16 years old, but you must be at least 17 to vote in a primary election if you will be 18 on or before the next general election
- Be 16 years old, but you must be at least 18 to vote in any other election
- Not currently be serving a term of imprisonment for a felony conviction
You must register to vote at least 8 days before the election you wish to vote in if you are registering online, through the mail, at a voter registration agency, or at a local driver's license examination facility. You must register to vote at least 22 days before the election you wish to vote in if you are registering through a voter registration drive. If you miss this deadline, you can also register through Election Day (see more under “Election Day Registration”).
Colorado Election Day Registration
If you’re eligible to vote in Colorado but have not yet registered, you can register and vote the voter service and polling center in your county through Election Day.
You can pre-register to vote in Colorado when you turn 16.
Voting Rights Restoration
Colorado does restore the right to vote upon release from detention or incarceration.
If you have a past conviction, learn more about your eligibility to vote here.
Voting In Colorado
Where To Vote In Colorado
Colorado is a vote-by-mail state, so you do not need to visit a polling place to vote, but if you prefer to vote in person, you can search for your voter service and polling center here.
Vote-by-mail & Absentee
Colorado uses a vote-by-mail system for all elections, meaning that every active voter registered in advance receives a mail ballot. If you are an inactive voter, the county has sent a ballot to your address and it bounced back because you no longer live at that location. To correct this you have to go online or to the county’s office to input your new address. The ballot will be sent to the mailing address you provided for your voter registration file. If you prefer to vote at the polls, you can vote in-person at a voter service and polling center.
Early Voting In Colorado
Colorado offers in-person early voting at voter service and polling centers. No excuse is needed to vote early. Voter service and polling centers open 15 days before Election Day and remain open through Election Day. During early voting a county can decide if they want to open polling locations on Sunday.
Primary Elections In Colorado
Colorado has semi-open primaries. Voters registered with a particular political party can vote in that party’s primary, as can unaffiliated voters. 17-year-olds can vote in the primary election if they will be 18 by the corresponding general election.
Voter ID In Colorado
Voter ID Requirements
If you are voting in person at a voter service and polling center, photo ID is required to vote in Colorado. If you are voting by mail for the first time, you may also need to provide a photocopy of your ID with your mail ballot. Valid forms of ID include:
- A valid Colorado driver’s license or valid identification card issued by the Colorado Department of Revenue. (Note: documents issued to not lawfully present and temporarily lawfully present individuals under Part 5 of Article 2 of Title 42, C.R.S. are not acceptable forms of identification.)
- A valid U.S. passport.
- A valid employee identification card with a photograph of the eligible elector issued by any branch, department, agency, or entity of the U.S. government or of Colorado, or by any county, municipality, board, authority, or other political subdivision of Colorado.
- A valid pilot’s license issued by the federal aviation administration or other authorized agency of the U.S.
- A valid U.S. military identification card with a photograph of the eligible elector.
- A copy of a current (within the last 60 days) utility bill, bank statement, government check, paycheck, or other government document that shows the name and address of the elector.
- A Certificate of Degree of Indian or Alaskan Native Blood.
- A valid Medicare or Medicaid card issued by the Centers for Medicare and Medicaid Services.
- A certified copy of a U.S. birth certificate for the elector.
- Certified documentation of naturalization.
- A valid student identification card with a photograph of the eligible elector issued by an institute of higher education in Colorado, as defined in section 23-3.1-102(5), C.R.S..
- A valid veteran identification card issued by the U.S. department of veterans affairs veterans health administration with a photograph of the eligible elector.
- A valid identification card issued by a federally recognized tribal government certifying tribal membership
Any form of identification listed above that shows your address must show a Colorado address to qualify as an acceptable form of identification.
If you do not have an approved form of ID, you can receive a free Colorado ID from the DMV.
If you go to a voter service and polling center without an approved form of ID, you may cast a provisional ballot. Your provisional ballot is counted if you complete the provisional ballot affidavit and the election official confirms your eligibility to vote.
Additional Colorado Resources
Your State Election Official
Colorado Secretary of State
Phone number: 303.894.2200