Registration
Same-day registration is available
Late registration begins October 6. County-specific in-person ballot rules apply through Election Day; check your county election office.
Rule source ↗Your 2026 voting guide November 3
Get ready to vote.
Find your deadline, mail-voting rules, and what to bring to the polls.
Choose where you vote
Select the state where you're registered.
Your state guide
Voting in Montana.
Regular registration closes
Passedcheck your options
Late registration starts October 6 and remains available with in-person ballot restrictions. Check your county election office.
Voting by mail
No excuse needed
Mail voting is available without stating an excuse. Check Montana's site to see whether a ballot is sent automatically or must be requested, and when to return it.
Rule source ↗
At the polls
Bring an accepted photo ID
Check Montana's accepted IDs and options if you do not have one.
Rule source ↗These are statewide rules. Local voting details can vary, so confirm your polling place and plan with the official Montana election office.