Josh Green wonders why:
I have a theory about why he's bailing out early. And it has nothing to do with preserving his last shred of dignity, because that's long gone and Trump never seemed overly concerned with holding onto it anyway. Like any politician who's screwed up, Trump is now playing defense, trying to hold onto what he has. In the realm of celebrity, which is what he seems to care about most, that's primarily "Celebrity Apprentice."
When the news broke yesterday that NBC was re-upping with Trump for another run of "Apprentice," it was pretty clear that he was going to abandon his political ambitions–if he ever really had any to begin with. Given that the last three months were so detrimental to his ratings, I wouldn't be surprised if his NBC deal included a clause that he fold up his tent and shut down the circus. That's just good business sense — and in Trump's case, it doubles as an act of mercy.
The Dish 