It's the stupidity, stupid.
That should be the soundbite.
In 1992, it was "it's the economy, stupid." It's the economy now, too, but it's so much more. It's the grotesque incompetence. Every aspect of this administration screams it. His prosecutors can't get indictments and are regularly tossed out for not being legally appointed. His Secretary of HHS is a national joke - and not a very funny one, because the issues are so serious. He started a war he can't justify, and it's not going very well. He hasn't fooled anyone that this war, and the one in Venezuela, and his pushiness over Greenland, and his other stupid acts aren't efforts to distract us from the Epstein files and the crimes of ICE.
And the economy is going down the toilet, too.
I think incompetence is the one thing everyone sees. Even some conservatives are seeing it. It's becoming impossible to pretend the dementia patient in the White House knows what he's doing, and those who try are getting laughed at.
I think we're finally reaching the tipping point I keep saying might come one day - the one predicted by evolutionary biology. Runaway selection. If something is very attractive to the opposite sex, it tends to evolve very rapidly, even to the point of being deleterious to the one bearing it. Peacock tail feathers are an example. It's going to be tough for many Republicans to win their primaries without Trump's base, but just as tough to win the general election with them.
I won't make predictions, but it certainly seems that way to me.