Trump because right wing Americans are nuts. Like they're running against a guy with dementia, with high inflation and a slowdown in the economy. Had they have had anyone decent, the election was over. Trumps the single biggest reason the Dems aren't dead and buried.
As for the Dems, they bizarrely left Biden in charge for too long. How they didn't see an 80+ year old man can't run, until 3 months out is bizarre.
To be fair to them, they backed themselves into a corner, and had to go with Harris. The Republicans are mad, but I don't get the Democrats excuse.