Do I need to provide ID when I vote by absentee ballot in Montana
You don't need to provide ID if you've already voted in Montana at least once. If you are a first-time Montana voter, and you did not meet the ID requirements when you registered to vote, you must include a copy of your ID with your absentee ballot application. Acceptable ID includes a photo ID that shows your name, OR a copy of a current utility bill, bank statement, paycheck, government check, or other government document that shows your name and Montana address.