Can you still register to vote, get a ballot, and vote on election day in any county in Montana? Yes. Even in the era of COVID-19, and what has been billed as an unprecedented "mail-in election." But you better be ready for a wait, maybe even a long wait at some of the county election offices.
Here's a question I received a couple of times already concerning mail-in elections here in Montana. What if someone voted early, but later decided that they wanted to change their vote? Could they go into the election office and get a new ballot and change their vote?