States used to be able to do it in one day. No reason for that to change except cheating
They used mohave small precincts that hand counted the vote and posted them a few minutes after polls closed. Small precincts mean the people overseeing the election were likely to know the voters in their precinct and fraud was a lot less likely, in case you are wondering why they had to go away.
We have huge unmanageable precincts because it makes fraud much easier and the computers that should make elections quicker and more fair somehow manage to do just the opposite.
Consolidating precincts had the same effect as consolidating schools did, people become strangers all in the guise of improving the outcome, well it did improve the outcome for those that wish to destroy the Republic.