I am actually baffled by the delusion that many/most Trump supporters, on social media etc. seriously believe that T. would win, not only that, the he'll win by a land-slide. It's not possible and LPCTech listed most/all the known reasons.
It was ironically Trump himself who was *entirely flabbergasted* 4 years ago, and almost lost it on TV when he saw that Obama got re-elected, because he (and other conservatives) were convinced Reps will win because "Obama is such a horrible pres", there was not other logical outcome for them in their mind...
Trump supporters ARE a minority, and their loudness, shouting, enthusiasm and T's media appearances won't change that.
You CAN'T win with little support by Latinos, Blacks, WOMEN, whatever minorities and not even full support from the own party.
Heck I have ultra-conservative in-laws, picture-book Reps, they think that T. is crazy and "scary".
* All this would be "fun" and tragic, sort-of, the problem is that T. himself likely also has this delusion....and wait 'til they lose (nomination, presidency), doesn't matter, then we can hear all that crap about rigged machines etc...and I GUARANTEE you that T. will go raging and call-up on revolts and unrest. A pathological narcissist/egomaniac *CAN* not lose. There is no place in his brain for this. That people won't vote for him "in a land-slide" is inconceivable.