Eligibility
To vote in Montana, you must:
- Be registered as required by law.
- Be 18 years old or older on or before the next election.
- Be a citizen of the United States.
- Have lived in Montana and in the county in which you intend to vote for at least 30 days.
You cannot vote if:
- You’re a convicted felon serving a sentence in a penal institution.
- You’ve been judged in a court of law to be of unsound mind.
Deadline
For regular registration, it must be postmarked at least 30 days before the election. For late registration, you must show up at the local election office up to and including on election day, fill out a voter registration card, and vote a ballot that you give to the election office staff.
Link
To find out more information and download a voter registration form please visit the Montana Voting Information page.
Disclaimer:
For the latest information regarding voter registration requirements and procedures in Montana, please consult the documentation provided by the state. This information is accurate at the time of writing but we make no guarantee that updates will be posted if the state alters its information.


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