Definitely they will try to cheat.
Whether the actual number of votes and electoral math specifically (minus cheating) would have made one or the other win, only God knows for sure, as no human has enough knowledge over the hundreds of thousands of: states, counties, high school gyms, ballots, mail trucks, ballot stuffing boxes, software processing files, etc.
But if we lose significantly - like more than just the obviously unlikely hair that we did last time - I will blame Trump for not dropping out in favor of Nikki and making us lose. He can pass the buck as much as he wants, I'm blaming him.