Polls are open 7:00 am to 7:00 pm local time.
Federal, state, county, and local offices, plus any measures. Your exact ballot depends on where you live.
County clerks mail a ballot to every active registered voter. They start Oct. 2 and must be done by Oct. 9. You don't need to ask for one.
Source: Colorado Secretary of State, Oct. 2, 2026 · Colorado Secretary of State, Sept. 23, 2026
Every county must have its drop boxes open by this date. The state expects 452 drop boxes. They take ballots through 7 pm on Election Day.
Source: Colorado Secretary of State, Oct. 2, 2026 · Colorado Secretary of State, Sept. 23, 2026
Every county must have its voter service and polling centers open by Oct. 19. The state expects 384 centers. You can vote, drop off a ballot, or get a new one there. Find sites and hours at GoVoteColorado.gov.
Source: Colorado Secretary of State, Oct. 2, 2026 · Colorado Secretary of State, Sept. 23, 2026
Register or update your record at GoVoteColorado.gov by this date to get a ballot in the mail. After Oct. 26 you can still register and vote in person at a voter center, up to 7 pm on Election Day.
After this date, take your ballot in its signed envelope to a drop box or voter center, or vote in person. Postmarks do not count.
Source: Colorado Secretary of State, Oct. 2, 2026 · Colorado Secretary of State — Election Day FAQs
Voter centers are open 7 am to 7 pm. Your ballot must reach your county clerk by 7 pm, or you must be in line by 7 pm. Postmarks do not count.
Source: Colorado Secretary of State — 2026 election calendar (PDF) · Colorado Secretary of State, Oct. 2, 2026 · Colorado Secretary of State — Election Day FAQs
If your county clerk tells you there is a problem with the signature on your ballot envelope, you have until this date to fix it.
Dates can change and counties can add early-voting days. When in doubt, your election office has the final word.
Early voting: Larimer County has 24 ballot boxes, open 24 hours a day since Oct. 2. Its 21 vote centers open in stages from Oct. 19 to Nov. 2. In Fort Collins, the first two open Oct. 19: Larimer County Administrative Services (200 W. Oak St.) and the CSU Lory Student Center. Vote centers are open 8 am to 5 pm on weekdays and on Saturday, Oct. 31. The county lists every site at https://www.larimer.gov/clerk/elections/where-to-vote.
Election Day: Vote centers are open 7 am to 7 pm. Ballots must reach the county by 7 pm. Postmarks do not count. Find a site at https://www.larimer.gov/clerk/elections/where-to-vote.
200 W. Oak St., Suite 5100, Fort Collins · 970-498-7820 · Monday–Friday, 8:00 am to 5:00 pm (except holidays) · larimer.gov/election
Source: Larimer County Elections — 2026 elections · Larimer County Elections — where to vote
Everyone who votes in person must show ID. Many kinds count, such as a Colorado driver's license or ID card, a U.S. passport, a military ID, a Medicare or Medicaid card, a Colorado college student ID, or a recent utility bill or bank statement (within 60 days) with your name and address. An ID that shows an address must show a Colorado address. Some first-time voters who vote by mail may need to send a copy of an ID with their ballot.
Source: Colorado Secretary of State — acceptable forms of ID
Related: Who shows up to vote · Who decides, and how to reach them · The calendar. Spot an error? Report it.
Colorado dates gathered 2026-10-08.