Because of the rush to count votes, very often...absentee ballots are simply skipped...which arrived a couple of days after the vote but having the qualified date on the stamp...could change the numbers. This is one of the issues/problems with the current system. I doubt if it’d be more than a one-percent change in the vote in most states.
I can remember voting as a GI in the 1990s and I didn’t get my ballot until four days before the election. I voted in a hurry and had it in the mailbox by the next day. I assume it was counted but it probably wasn’t in the state’s tally on the next day after the election.
The State Secretary of State knows from county reports how many absentee ballots were sent out.
When the decision to stop counting is made. it is because the margin of victory is greater than all votes left to be counted. If every absentee ballot was returned, the state would look at how many would be necessary to overcome the margin of victory.
In order to steal the election, the thieves must find a way to reduce the margin of victory. That is apparently happening already with a claim that 3 precincts in WI found errors in counting totals and Trump’s margin has been reduced.
But they need to reduce it to the point where the uncounted votes, meaning those votes that weren’t counted because they were not enough to overcome the winning margin, are now capable of overcoming the new margin.
Easy example:
Candidate A wins over Candidate B by 10,000 votes.
Votes left uncounted number 6,000.
Errors found in totals reduce the winning number of votes to 5,000.
Votes left uncounted now exceed winning margin. So now they will be counted to see if they make a difference.
Many votes aren’t counted by the day after the election. That’s why it takes weeks to certify the vote in each state and why we’ve seen the popular vote count go up day after day in official tallies. All valid ballots get counted by the end.