From an interview with GQ:

And I see you have a picture with Bill Clinton.
Yeah, I still do. [laughs nervously] You know, I had all my—If you go to the governor’s residence, we have a bunch of pictures with me and my wife and Bill. And we’re not taking them down. You know, he’s a part of my life. But he’s a little pissed off.

The Obama endorsement had to be kind of painful.
Yeah. I did it because it was the right thing to do for the country, really. It is painful. But it’s done.