Its going to be Trump in a coup. Election night will come, he'll be ahead, day or two later as more votes are counted he's losing ground to Biden, Trump orders the election halted and declares himself the winner, Biden sues, it goes to the Supreme Court, they're 6-3 Republican now, side with Trump, election is over, Trump wins.
Then he bargains for a third term, goes to the courts again, they side with him again, he then says because he's entitled to a third term there shouldn't be any votes, courts side with him, and that it. Trump gets to be president for life, the Democracy is all but over and Republicans have established a single-party government.