What leads you to predict that? Someone comes from out of nowhere (as has happened from time to time)? Some aspect of the criminal proceedings finally makes him radioactive? His health? Something else?
I ask because his base and polling lead obviously would seem to make him the presumptive favorite, the normal “it’s way early” caveat granted. I’m in no way super-confident about anything in politics these days, but if you forced me to bet the house, I’d wager Trump’s the nominee.