One of the BIGGEST reasons that is apparently esoteric to the modern media and punditry is a very very simple and fundamentally human one.
Yes, the economy is strong, yes, Trump is delivering on his promises far more than ANY elected president I can think of, Yes, he’s an incumbent... etc etc etc.
All those things mean Trump is going win and win big.
However one of the BIG reason no Democrat is going to have a shot, is simple, and its human nature (or at least decent America nature).... and that’s simply the sense of fair play.
All but the most left wing die hard, knows that Trump has not been given a fair shake, he’s attacked and bashed, everywhere, and never gets any credit for anything good....
That’s going to turn off folks who might give you a shot....
D can’t get the middle, no matter what (short of economic collapse) while the entire media/elite political complex is treating Trump the way they are.
The big reason the election will be up in the air until the bitter end is vote fraud.
The dems were caught flat footed last election because they honestly did not seriously think Trump had a chance. They were so over confident that Hillary had it in the bag, that they didn’t try the vote fraud until it was way too late.
I don’t think they’ll be caught off guard this time around.