For what it is worth, Arizona allows voters to drop off their completed mail in ballots at any polling place on the day of the election. These ballots all need to have their signatures matched with the voting roles, which is a labor intensive task. Something over half a million votes are dropped off. They can verify about 50,000 to 75,000 a day. So about 7 to 10 days to count them. The Republicans put this in place, by the way, for reasons that are clear if you realize how bast and empty the state is outside of two metro areas and where some huge Repo majorities are.