Summary
Donald Trump is likely to claim victory on election night, despite the vote count possibly extending over several days.
Early tallies may lean Republican, reflecting in-person votes, while absentee ballots counted later may shift toward Democrats, creating a “blue shift.”
Key states like Pennsylvania, Arizona, Michigan, and Nevada may take extra time to declare results due to laws and ballot processing delays.
Trump might exploit early Republican leads to allege fraud.
Early voting in the blue wall states is blocked for count until after precinct counts. So you will see early in the night, a mirage where perhaps Trump is up. This is when he’ll say he won, but by early morning, and the early vote count, the story might change. However Florida does count its early vote first.
The red mirage/blue shift will probably be much smaller than prior elections, since it seems Trump supporters are using early or mail in voting more than before. The splits by party for these methods are smaller so far this year.