McCain: Don't Be Surprised.

Since McCain is likely to be a one-term president due to his age, don't be surprised if he goes back on his word to appoint Supreme Court justices in the style of Roberts and Alito, presuming he's given the opportunity, of course. As a one-term president he would be under absolutely no obligation to keep campaign promises; at this point he just wants to be president for the ego stroke it gives him. He could really care less about policy at this point.