1. 100%. Obviously. That's what he has done (culminating in Jan. 6, 2021), is still doing, and will continue to do. Get ready for hundreds of lawsuits, illegal confiscation of ballots, rhetoric that the Dems rigged the elections, etc. Supposedly Dems have been preparing with an army of lawyers, but Dump and minions are sure to come up with stuff they aren't ready for, including outright refusal to seat the winners and saying "Who's gonna make us?" And before that, we still have to get through Election Day first.

2. Very high. He has already been saying for some time he's waiting until after the midterms to escalate in Iran. Of course you never know exactly what he'll do when since he's easily manipulated by Putin, Netanyahu, Stephen Miller, etc.

3 & 4) Not very likely, especially #3 which they should have done sooner if they were going to. Also remember this buffoon is mostly a drooling dotard signing whatever papers are put in front of him, so better to ask what the technofascist broligarchs and the fascists running the administration have planned, not him. It may depend on the margin of victory at the polls. Larger margin/more states won = less chance the people will go along with their rhetoric. Low margin = higher chance. They've set it up for challenging Alaska already, but if enough other states go Blue, that shouldn't matter.