Colorado elections

• OCT 19
  Early in-person voting opens

  Early-voting locations may stay open through Election Day.

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• OCT 26
  Registration deadline

  Voters may register through Election Day. To be mailed a ballot, register online at GoVoteColorado.gov, by mail (postmarked), at a voter registration agency or a driver's license office by Monday, Oct 26, 2026 (8th day before); voter registration drives must submit by Oct 13. After Oct 26, register in person at a Voter Service and Polling Center (VSPC; open from Oct 19) through 7:00 p.m. on Election Day, Nov 3, and vote in person. In-person registration at the county clerk's office is allowed whenever registration is permitted there, so there is no separate in-person cutoff.

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• NOV 3
  Early in-person voting ends

  Early-voting locations may stay open through Election Day.

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• NOV 3
  Last day for mail ballots to arrive

  Ballots must be received by the county clerk by 7:00 p.m. on Election Day, Nov 3, 2026; postmarks do not count. Return by mail, 24-hour drop box (accepting ballots from Oct 12), drop-off location or VSPC. Military/overseas ballots must be sent by 7:00 p.m. Election Day and received by close of business on the 8th day after the election.

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• NOV 3
  Election Day

Colorado offers same-day registration.