He will revert to what has worked in a last minute over the top blitz of outrageous balderdash. It may well be the weirdest end of election cycle yet. Despair and panic. He won't go quietly.
This^ is definitely a possibility. The saying, "You go with what you know" is simple but true. When I was in the army I learned what to do when you're caught in a close ambush on foot---you just charge at it with as much firepower as you can muster. But then I retrained as a cav scout--an armored unit--and on my first training exercise as the squad leader, we got caught in an ambush, but it was from another armored unit a good 400 meters away. So what did I do? I immediately ordered the entire squad of APCs and one Bradley to turn hard right and charge the position that had caught us out in the open.
We were all "killed" within minutes. The de-brief questioning was predictable: "what's with the suicide charge?"
So it seems likely that indeed, Trump will flame out with his own ignorant, misguided suicide charge.