Trump has had near 8 years to built a political coalition of support. If he can’t win now that is his fault and no one else’s.
I don’t think he has a chance, but then again the usual rank and file establishment GOP eunuch’s don’t have a chance either because they have lied so much no one believes a word they utter. The deal with the devil the GOP made in 20 is binding and they will pay with the very existence of their beloved Party.
Both parties hate him, along with the deep state traitors and the globalists. He pissed in their Wheaties and broke their piggy banks. They will steal it again and do so quite easily with no opposition from the Republicans. And by some miracle should he win they will JFK him with the Republican Party establishments full support.