CO · How to vote
Voting in Colorado.
Three ways to vote, three deadlines. ID rules and vote-by-mail policy below — verify the specifics with the Colorado Secretary of State at the link.
1Official source of record
Colorado Secretary of State — Elections
VOTER ID REQUIREMENTS
Colorado accepts various forms of ID. Photo ID not strictly required. Accepted: CO driver's license, passport, employee ID, student ID, utility bill, bank statement, or government document.
VOTE BY MAIL
Colorado is a universal mail ballot state. All registered voters automatically receive a mail ballot. In-person voting centers also available.
3NCSL voter ID requirements2026-04-153NCSL absentee + VBM rules2026-04-15
Official action — CO
The state’s own tools, with links to verify.
Each card below routes to the official Colorado system. Where the state delegates to county Supervisors of Elections, the card says so honestly.
Statewide→
Check my registration
Name + ZIP + DOB. Does NOT return polling place or sample ballot — just registration confirmation.
Statewide→
Register / update online
CO DL or state ID required. Same-day reg through Election Day at any vote service center. Online deadline 8 days pre-election.
Statewide→
Find my polling place
Voter Information Portal — returns vote service centers + drop-box locations. CO is universal-mail.
Statewide→
Preview my ballot
Per-voter sample ballot at dedicated host.
Statewide→
Request a mail ballot
Universal-mail — no separate request needed. UNIQUE: ballot-curing portal lets voters fix signature mismatches online up to 8 days post-election. Distinctive across all 20 surveyed states.
Statewide→
Track my mail ballot
BallotTrax-powered, statewide. SMS/email/voice opt-in. Same vendor as CA/GA/AZ/NC.
Statewide→
See who's on the ballot
TRACER campaign-finance system also maintains the candidate-of-record list. CO 2026 primary 2026-06-30 (top-two for state offices).
Statewide→
Statewide ballot measures
Statutory + constitutional petition tracker. Blue Book = legislative non-partisan voter guide, mailed to every household. Multiple initiatives in collection; none certified for Nov 2026 yet.
Statewide→
Live + past results
Live + archive via Clarity Elections (Scytl/Civix), same vendor as GA. There is no results.coloradosos.gov.
Statewide→
Election calendar
Primary 2026-06-30, general 2026-11-03.
1UOCAVA · military & overseas voters
Federal deadlines for Colorado
Active-duty service members, their families, and U.S. citizens overseas have separate deadlines under UOCAVA. Sourced live from the U.S. Federal Voting Assistance Program.
2026-06-30Ballot Request — State PrimaryNo Deadline
2026-06-30Ballot Return — State PrimarySent by**
2026-06-30Registration — State PrimarySent by*
2026-11-03Ballot Request — General ElectionNo Deadline
2026-11-03Ballot Return — General ElectionSent by**
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turnout.app/how-to-vote/co · 2026-05-02 · NCSLOther states
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