LOL, David Letterman is the kind of comedian that when he gets a bug up his ass, HE DOES NOT LET IT GO. Watch him slam Mitt Romney from now until he sits in his CHAIR.
And remember, how John McCain dissed Letterman for Katie Couric. McCain told Letterman he had to run back to D.C. for the financial crisis but was caught getting glammed up for an interview with Katie Couric. And Dave said, "the road to the white house runs right through me...."
..and Letterman talked about McCain so hard, he RETURNED to his show with an apology
Mitt, get your ass over to "The Late Show".....