They'll immediately fall for the next such guy. Republican voters aren't actually reconsidering their views. Corporations and oligarchs have known no major blowbacks in decades and keep winning on every front, further eroding the Republic and its institutions little by little. And they won't stop until all that's left of America is an empty shell, a dead state like Russia, a sandbox for the Epstein class.
I hope we get to the Idiocracy timeline before the one you describe