Yes, Montana has same-day voter registration (called “late registration”). Same-day registration allows you to register and vote in person on the same day. You can also use it to update your voter registration information.
The deadline to register to vote in Montana is 30 days before Election Day. If this registration deadline has passed, you can still use late registration which allows you to register and vote in person on the same day.
Montana offers same-day registration during early voting and on Election Day. You must provide the ID info or documents required to register in Montana.