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Requirements to vote:

  • 18 years old on or by Election Day.

  • US citizen.

  • Resident of Montana and your county for 30 days prior to Election Day.

  • Not be incarcerated for a felony.

  • Not be declared unsound by a court.

How do I register? 

  • In the state of Montana, you can register to vote via mail, or in person.

  • To register via mail, fill out a form at and mail it to your county election office. If you need to fax it, contact your county election office for the different options that they will provide you. You can also drop it off at the office directly.

    • The form must be postmarked 30 days prior to the election and received 27 days before Election Day.

  • To register in person, you can go to your county election office. You must bring your driver’s license, and if you don’t have one, you must provide the last 4 digits of your Social Security Number. You can find your local office at

    • You can also register to at a DMV when applying for or renewing a driver’s license or Montana ID.

    • There is no deadline to register in person.

  • You can also register at the polls on Election Day if you show proof of residency.

  • You do not have to register a party affiliation to vote in primary or general elections. You can vote on as many party ballots in the primary election as you want.

Can I pre-register?

  • Montana does not have any specific policy listed on pre-registration; you should contact your local county clerk’s office for more information.

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