There has been much discussion about whether votes in this next election will be counted securely.
Every state has rules about what poll observers can do at the polls and how votes can be challenged. Here are the rules for your state:
Montana The election judges shall permit one poll watcher from each political party to be stationed close to the poll lists in a location that does not interfere with the election procedures. A candidate may not serve as a evidence supporting the challenge to the election administrator or, on election day, to an election judge. (Mont. Code. Ann. § 13- 13-301)
An elector's right to vote may be challenged at any time by any registered elector by the challenger filling out and signing an affidavit stating the grounds of the challenge and providing any poll watcher at a polling place where electors are voting on ballots with the candidate's name on them. (Mont. Code. Ann. § 13-13-120).