1. Trump falls seriously ill - I give it about a 20% chance. Possible but not probable. The guy runs on hate and venom and will likely fall seriously ill after he loses again.
2. Trump will declare bankruptcy I give it a 50/50 chance. His followers won't care but it might drive him insane. His followers can't raise enough money to bail him out. But he might get a benefactor to write a check to cover him. Russia or a real billionaire like Musk.
3. Melania divorces Trump. No way. And if he wins, she will not move into the white house this time. She just does her own thing like always.
4. Women coming forward, again won't sway anyone unless they produce a child with genetic testing. Even then, won't move the needle much.
5. Again additional videos, not going to do a thing unless it's the pee pee tape from Russia. That might change something.
6. I have no doubt that there will be more direct evidence coming out that Trump planned and directed an assault on the Capitol and tried to steal the election. Again, we've all made up our minds so nothing is going to change here.
7. Assassination - You know this is a wildcard but if it happened close to election day, it would send things into turmoil. I think that Trump would just declare himself a winner because Harris wasn't on the ballot. If it happened after the election, all bets are off. States have to promote a new president.
8. Taylor Swift - I think Trump continues to denigrate Swift but this will backfire especially if she tells her followers to vote for Biden. Could really screw things up for Trump.
If this isn't a resounding success for either candidate, then look for major problems. If it's really close or there is some serious monkeywrenching from the GOP, you might see Biden declare himself the winner and just stay in the white house especially if it goes to Congress or any other weird scenario where someone besides the voters decides. Also, if it's really close, Trump might rally the MAGA nuts again, but with Biden in control of the National Guard until the last minute, I doubt it would amount to anything...
If nothing weird happens before November, Biden will crush Trump. I am about 98% certain.