In Minnesota, people who voted by Absentee ballot are permitted to change their mind, and come to the polling place on Election day and vote there. If they do so, that overrides their absentee ballot, and it is discarded.
So absentee ballots can’t be counted until after the polls close, and the election judges have to look up each one in the voter sign-in book to make sure the person didn’t manage to come in and vote in person.
That can take a fair amount of time, if there are a lot of absentee ballots in a precinct. Experienced election judges have a trick to make this go faster. Before opening, or at slow times during the day, they go thru the absentee ballots, find them in the sign-in book, and mark “absentee” next to the name. Then if anyone comes in and goes to sign-in at that spot, they know that they have to find that absentee ballot and discard it. So at the end of the day, they will have checked all the absentee ballots, and can just count all the ones that are remaining.
Here the absentee ballots are the same as regular ballots, a paper ballot with circles that the voter fills in. Each one is sealed in an envelope, with the voters name & address on the outside. The are separated out, and delivered to the actual precinct where the person is registered to vote. To count them, the judges open the envelopes and just feed them thru the same optical scanner that all voters use.
Under this system, there is no question about not counting absentee ballots.
First, the election judges at this one precinct would have no idea if the overall election totals were ‘close’ – the totals aren’t in yet.
Second, it doesn’t take much time to count the absentee ballots. They are just fed thru the scanner one after another. Usually, the judges doing this are done before the other judges are finished taking down and packing up the voting booths. Besides, they don’t mind much if it does take some time – they are paid by the hour, anyway.