Consider for a moment that sixty million Americans voted for Trump in 2016, and they haven't learned a thing. Forty percent of Americans still support the cretin. Even if he is defeated in a landslide and then hauled off to prison, a vast number of his cult will swear the loss is a leftist/deep state hoax and maybe even turn violent. And no matter what happens, two out of five of the Americans you meet will be morons.
The problem is until Trump came along morons never had one of their own to vote for. Except for maybe George Wallace in the sixties none of the Repubs really appealed to goobers at the national level. Once Trump won the nomination in 2016, once he had a chance to win the election, they had the ignoramus they had been waiting for. At last they could taste power. And they love it.
Prior to Trump, Presidents left and right, Republican and Democrat, came from the educated elite. Trump did not. He was some kind of millionaire TV guy who owned hotels and golf courses. He spoke their language – content-free non sequiturs and gibberish. Trump represented the lost, the people who could never understand how the world works, and ready to grab on to whatever conspiracy theory Alex Jones put forth. In Trump they have power for the first time, and they will hold on to it with everything they have, doing whatever it takes to win. If it means destroying the Post Office to keep the wrong people from voting, so be it.
It's doubtful that any Trump morons will abandon him at this point. If they aren't ready to admit they are hopeless rubes who got conned, they won't be prepared to do so in the next three months. And that's especially true if they are used to being conned by a fundamentalist preacher or televangelist. They will try to hold onto power in order to own the libs, to keep their cult together, and to bask in the glory of power no matter what it costs them.
The only response I can think of which may aid the half dozen undecided voters at this point is to take a page out of Ronald Reagan's notebook and ask Americans, “Are you better off than you were four years ago?” Most Trump morons with mortgage payments overdue, no food in the refrigerator, and a family affected by a pandemic will say “Hell, yes!”
But a few may not.