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: Ballots were mailed Oct. 5, and the 24-hour drop boxes opened that day. The main voter service and polling center, at the Denver Central Library (10 W. 14th Ave. Pkwy.), opens Oct. 12. More centers open in stages on Oct. 19, Oct. 26, Oct. 30, and Nov. 2. Most are open 8 am to 5 pm on weekdays (8 am to 6 pm from Oct. 26) and 8 am to 5 pm on Saturday, Oct. 31. The city lists every site at https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Denver-Clerk-and-Recorder/Elections-Division/Where-to-Vote-in-Denver.
Election Day: Voter service and polling centers are open 7 am to 7 pm, and drop boxes close at 7 pm. Find a center at https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Denver-Clerk-and-Recorder/Elections-Division/Where-to-Vote-in-Denver.
200 W. 14th Ave., Denver · 720-913-8683 · denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Denver-Clerk-and-Recorder/Elections-Division
Source: Denver Elections Division · Denver Elections — key dates for the 2026 general election · Denver 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.