I have always thought that the easiest way to vote extra times came in the precincts where Republicans are reluctant to go and thus Democrat election judges sign, completely legal, as Republicans. If there is no one else in the room near the end of the day, what is to prevent a polling judge to just use the electronic card to vote, clear it, vote again, over and over. Nothing. It is just one of many ways.
Trump's call for poll watchers is important. He is not calling for intimidating voters, though the MSM found one loser who made it sound that way. Of course they will feature him prominantly.
Ah, yes. I vaguely remember the sarcastic phrase “re-elect Governor Sauerbray” after she got defeated by fraud.