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2026 Elections
How to Vote in Colorado: 2028 Deadlines, Early Voting & Poll Hours
Everything you need to vote in Colorado for the November 7, 2028 general election — when to register, when early voting opens, how to vote by mail, and when polls close.
Rules as of September 17, 2026 · verify at Colorado's official election site
Election Day
November 7, 2028
Quick Answer
- Register By
- 8 days before Election Day
- Early Voting
- Opens ≈ Oct 19, 2026
- Mail Ballot Request By
- Not needed — every voter is mailed a ballot automatically
- Polls Close
- 7 p.m. MT
- Election Day
- November 7, 2028
Build your Colorado voting plan
Choose how you plan to vote and we'll narrow the checklist below to the steps and dates that apply to you.
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See rule
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See rule
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Same-day registration
Same-day registration is available during early voting and on Election Day.
Official source →Nov 7, 2028
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Early voting opens
15 days before Election Day Every active voter is mailed a ballot.
Official source →See rule
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See rule
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Nov 7, 2028
What's on Your Colorado Ballot
Every U.S. House seat is up for election every two years. Whether a U.S. Senate seat is also on the ballot depends on the state.
U.S. House of Representatives
All of Colorado's U.S. House seats are on the 2028 ballot. View Colorado's current delegation →
U.S. Senate
On the ballotThe November matchup: Mark Baisley (R) vs John Hickenlooper (D).
Colorado Supreme Court
On the ballot1 seat is on the 2028 ballot. Local judges may be on your ballot too. See the candidates and how Colorado chooses judges →
To see every race you will vote on — including judges and local measures — check your sample ballot from your county or local election office, starting at Colorado's official election site.
Find your Colorado representative and senators
Enter your address to see exactly who represents you before you vote.
Voter Registration in Colorado
To vote in the November 7, 2028 general election, register by 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 in Colorado
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.
Voting by Mail in Colorado
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.
Track your ballot: use Colorado's ballot tracker to see when your ballot was mailed, received and accepted.
Details and request forms are at Colorado's official election site.
Voter ID Requirements in Colorado
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.
Poll Hours in Colorado
Polls are open until 7 p.m. MT on November 7, 2028.
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.
When Colorado Certifies Its Results
Election-night totals are unofficial. The count becomes official in two steps:
- Local: County canvass boards — by about November 25, 2026. Within 22 days of the election.
- Statewide: Secretary of state — November 30, 2026 on the 2026 calendar. Within 27 days of the election.
Certifying is a required step, not a second vote on the result. What happens if a local board won’t sign off, every state’s deadlines and how a result can be challenged are on how election results are certified.
Live on Congress Countdown
Live countdown to Election Day — and every date in between
Registration deadlines, early voting, and the full 2026 election calendar.
Frequently Asked Questions
When is the deadline to register to vote in Colorado?
8 days before Election Day Confirm the exact date at https://www.coloradosos.gov/voter/pages/pub/home.xhtml.
Can I vote early in person in Colorado?
Colorado mails every active registered voter a ballot automatically, so most voters don't need a separate early-voting trip. In-person options still exist — see the early voting section below.
Do I need ID to vote in Colorado?
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.
When do polls close in Colorado?
Polls close 7 p.m. MT on November 7, 2028.
How do I vote by mail in Colorado?
Colorado automatically mails a ballot to every active registered voter. Must be received by 7 p.m. on Election Day
Is it too late to register to vote in Colorado?
8 days before Election Day Confirm at https://www.coloradosos.gov/voter/pages/pub/home.xhtml.
How do I track my mail ballot in Colorado?
Use Colorado's ballot tracker (https://ballottrax.coloradosos.gov/voter/) to see when your ballot was mailed, received and accepted.
Where can I see a sample ballot for Colorado?
Your county or local election office publishes sample ballots before each election. They list every race you will vote on, including judges and local measures. Start at Colorado's official election site (https://www.coloradosos.gov/voter/pages/pub/home.xhtml).