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Montana: Voter Guide

Automatic voter registration

Online voter registration

Pre-registration before turning 18

Number of days prior to election a voter must be registered is 15 days or less

Online voter registration closes 15 days or less before Election Day

Registration drives

Same day registration offered in all elections

Same day registration located at polling place

Same day registration offered only during early voting


All mail voting

In-person early voting

Amount of early voting days is higher than 7

Election day is a state holiday

No-excuse mail voting

12+ hours of open polls

Paid time off work to vote

Time off work to vote


Felons can vote after incarceration with completion of sentence

Felons can vote immediately after incarceration

Felons can vote while incarcerated

No ID required to vote

Mental competency not required to register

Non-photo ID required to vote

Photo-ID required to vote

Upcoming Elections

There are no upcoming elections. Sign up for email or text notifications prior to important election dates.

Voting Qualifications

Not in a penal institution for a felony conviction
Not currently determined by a court of law to be of unsound mind
Be a resident of Montana and of the county in which you want to vote for at least 30 days
United States Citizen
18+ Years of Age


In Person - 
By noon on the Monday before Election Day
Mail - 
Postmarked 30 days before Election Day and received 27 days before Election Day
Mail - 
Application to request absentee ballot due 1 day or more before Election Day, but recommended to request 7 days before Election Day
Mail - 
Voted ballot due by Election Day
In Person - 
30 days before the election through in person absentee voting

More Information

There is no party registration in Montana. Individuals who vote in a primary election are given all the parties' ballots, and can choose in private which party ballot they wish to vote. Voters in a primary election cannot vote on more than one party's ballots.

Any registered Montana voter may apply for an absentee ballot and vote by mail.

Be sure to bring one of the following on Election Day:

  • Government-issued photo ID or a state concealed carry permit OR
  • Two documents displaying your name and current address, such as:
  • A current utility bill
  • A bank statement
  • A paycheck
  • A government check
  • Any other government document showing your name and address

If you don’t have any of these, you can fill out a Polling Place Elector ID form. If the election worker is able to verify the information on the form, you can still vote.