Quote of the Day: "You Have to Admit That It Worked"

Here is Ben Carson defending his endorsement of Donald Trump:

Q: If someone like Mr. Trump can call you, an acclaimed and noted neurosurgeon, as someone who lacks intellect or is a child molester, doesn't that alarm you as to how he can portray other people in this country as well, and use the same rhetoric?

A: Well, you know, he said it was political, he was concerned about the fact that he couldn't shake me. Look, I understand politics, particularly the politics of personal destruction. And you have to admit to some degree, that it did work. A lot of people believed him.

First Christie, now Carson. What does Trump have on these people?