How to Vote in Colorado: 2026 Deadlines, Early Voting & Poll Hours

To vote in the November 3, 2026 general election, register by ≈ October 26, 2026 — 8 days before Election Day.

Colorado also allows same-day registration during early voting and on Election Day.

Dates marked ≈ are computed from state statute and can shift with county practice. Confirm your exact deadline and check your registration status at Colorado's official site.

Early voting opens ≈ October 19, 2026 — 15 days before Election Day. It runs through Election Day.

Colorado is an all-mail state: every active registered voter is automatically mailed a ballot, and in-person early voting sites are an alternative to mailing it back.

Every active voter is mailed a ballot.

Confirm exact locations and hours — which vary by county — at Colorado's official election site.

Every active registered voter in Colorado is automatically mailed a ballot — no request needed.

Return rule: Must be received by 7 p.m. on Election Day

Every active voter is mailed a ballot automatically.

Details and request forms are at Colorado's official election site.

A non-photo document showing name and address (such as a utility bill or bank statement) is accepted alongside or instead of a photo ID.

See the full list of accepted ID at Colorado's official election site.

Polls are open until 7 p.m. MT on November 3, 2026.

See how Colorado's closing time compares nationwide on the full poll closing times by state page, or confirm your local hours at Colorado's official election site.