For those of you who are smarter than I am, and admittedly, that is most of you.
I don't get how all of a sudden mail in voting is fraudulent. We've had mail in voting for years and no president has ever contested the validity of mail in voting until Trump. Trump apparently does not realize or admits that a significant portion of his base will vote by mail. Not every body who goes to his rallies will vote in person. Not every Trump supporter goes to his rallies.
Military personnel on deployment will vote by mail. I mean where the hell will soliders, airmen, or Marines in Afghanistan or Germany or other far flung locations or sailors on ships in the Mediterranean or the Western Pacific gonna find a voting booth?
If he finds a way to get those ballots invalidated, he could be throwing votes away that could decide the election FOR him.
He's cutting his nose off to spite his face. He's not thinking this through.