It all depends what they have on him. After 2 bankruptcies, thousands of girlfriends, and many people accusing him of lying, I am sure they could find something that even he would not want out in the open.
Again I am not a big fan of Trump, this trend toward celebrity politics (Heck celebrity everything!) sickens me!
But he has done something with his life there is a track record both good and bad, he is not a complete fabrication like Zero.