The perfect storm: an incompetent and corrupt administration, with a loud segment of the populace who would rather believe conspiracy theories than science, and a hostile foreign government who is providing and promoting conspiracy theories.
If this doesn’t ultimately destroy the Republican party then there is no hope left.
But who is Trump anyway? From what we know he has always been winging it-- guessing his way through school, hiring someone to take his tests and write his papers, bragging about what a great businessman he is while going bankrupt over and over, if not for the fact that he got millions from his dad he would be destitute now (an old boss of mine once joked “you can pour water into a sieve, you just have to pour it in fast enough!”)
He never wanted this job, he just wanted the title of president, like having a diploma without actually going to school. So when a real serious challenge came up he fell back on the only strategy he’s ever known: talking big and hoping it would all just turn out OK.