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State Election Guide

Colorado election dates and voting deadlines for 2026

Colorado 2026 election dates. Find mail ballot deadlines, voter service centers, and registration through Election Day. Official sources included.

Next listed election: November 3, 2026

Check official voting information ↗

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Make your plan

Registration and ways to vote

Choose the voting method that works for you. Deadlines depend on that method. Check the time and delivery requirements, not just the date. Military, overseas, and emergency voting may have separate rules.

01

Register

Register online or submit a paper application. October 26 is the cutoff to register and receive a ballot by mail. Afterward, visit a voter service and polling center to register and vote through Election Day.

  • Registration-drive deadline

    October 13 is the registration-drive deadline in the official 2026 calendar. Other registration methods remain available.

    Official deadline source
  • Mail or agency registration: mail-ballot cutoff

    Register by October 26 to receive a ballot by mail. Afterward, register and obtain a ballot at a voter service and polling center.

    Official deadline source
  • Online registration: mail-ballot cutoff

    Register by October 26 to receive a ballot by mail. Afterward, register and obtain a ballot at a voter service and polling center.

    Official deadline source
  • In-person registration: final day

    Eligible voters may register and vote at a voter service and polling center through Election Day. Voting closes at 7 p.m.

    Official deadline source
Check official registration options ↗

Source review: 2026-10-19

02

Vote early

Voter service and polling centers: October 19–November 3; check local days and hours

  • Voter service and polling centers open

    Required centers operate October 19–November 3, except Sundays and the first Saturday of that period. Confirm local locations and hours.

    Official deadline source
  • Final day to vote in person

    Election Day voting ends at 7 p.m. Mountain time.

    Official deadline source
Check official dates and locations ↗

Source review: 2026-10-19

03

Vote by mail

Active registered voters receive a ballot by mail automatically. Sign the envelope and return it to an official location or mail it early enough to arrive by 7 p.m. Election Day. Military and overseas voters have separate return rules.

  • Domestic mail-ballot distribution begins

    The revised 2026 calendar permits initial mailing October 2; counties must send initial packets to active eligible voters by October 9. Delivery dates vary.

    Official deadline source
  • Domestic ballot receipt deadline

    The county clerk must receive your ballot by 7 p.m. Election Day. A postmark is insufficient; use an official drop box if mailing would be too late.

    Official deadline source
Review absentee eligibility and instructions ↗

Source review: 2026-10-19

04

Election Day

November 3, 2026. Poll hours: 7:00 a.m.–7:00 p.m. Mountain time. Check your official ballot, voting location, and identification requirements before you go.

Find official Election Day information ↗

Source review: 2026-10-19

Date labels compare calendar dates in Mountain time; “Today” does not mean the cutoff time has not passed. Confirm local times with your election office.

Before You Vote

Key voting questions

How can I find my polling location?

Use the Colorado election office lookup or contact your local election office before Election Day.

Colorado voter information lookup

Use Colorado’s voter information resource to review your personal voting information.

  • Check Your Voter Registration Status
  • Check Your Polling Place Location
  • View Your Sample Ballot
  • Check Your Absentee Application and Ballot Status

Who can vote in primaries in Colorado?

Affiliated voters use their party’s primary ballot. Unaffiliated voters may choose one participating party; in June 2026 this includes Democratic, Republican and Unity Party primaries. Return only one party’s ballot.

Page generated: October 19, 2026. Generated from structured election data and official source links. Confirm final details with state or local election officials.