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 for at least 30 days.

Even if you meet the above eligibility qualifications, 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.

You can register to vote in Montana in one of the following ways mentioned below: 

• Visit your county election office Monday through Friday between the hours of 8 a.m. and 5 p.m. and complete a registration form.
• Fill out and sign a voter registration application and drop it off at your county election office, or mail it to the county election administrator.
• Fill out and sign a registration form when you apply for or renew your driver’s license or Montana ID.
  • You must provide your Montana (MT) Driver’s License number or MT Identification (ID) card number when you register.   If you do not have a MT Driver’s License or MT ID card, you can provide the last 4 digits of your Social Security number (SSN).     If you do not have a MT Driver’s License or MT ID card, or a SSN,  attach a copy of photo ID that shows your name, or acceptable ID that  shows your name and current address  (paycheck stub; utility bill; bank statement; tribal ID; or government document).
  • ID numbers provided on the voter registration card are kept confidential and are not available for public inspection.
  • You will need to provide a residence address or specific geographic  location information from which your residence address may be determined. The residence address must be in the county in which you are registering.

Once you are registered, you will receive a voter confirmation card from the county election office that contains the precinct and polling place for your residence.

Any registered voter may vote by absentee ballot:

• Fill out an Application for Absentee Ballot to have ballots for which you are eligible automatically mailed to you.
• An application may be mailed, or dropped off at the county election office.
• Applications must be received by the county  election office by noon the day before the election. If you drop off the  application you will be able to pick up the absentee ballot at the same  time, once ballots are available.
• An absentee voting packet will be mailed to the address you  indicated on your application, or you can pick up the packet at the  county election office at the time you apply for the absentee ballot, if  ballots are available at that time.
• After voting the absentee ballot, return in the envelope(s) provided. READ INSTRUCTIONS INCLUDED WITH THE PACKET CAREFULLY.
• Be sure to sign the affirmation on the signature envelope before sending back or dropping off. Note:  The person to whom the ballot was issued must be the person signing the return envelope.
• You can track your absentee ballot for federal/state elections at My Voter Page.