John McCain Cancels Letterman Appearance, Keith Olbermann To Fill In

Update: Drudge reports that Letterman mocked McCain during the show's taping Wednesday afternoon.
"In the middle of the taping Dave got word that McCain was, in fact just down the street being interviewed by Katie Couric. Dave even cut over to the live video of the interview, and said, "Hey Senator, can I give you a ride home?"
Earlier in the show, Dave kept saying, "You don't suspend your campaign. This doesn't smell right. This isn't the way a tested hero behaves." And he joked: "I think someone's putting something in his metamucil."
"He can't run the campaign because the economy is cratering? Fine, put in your second string quarterback, Sarah Palin. Where is she?"
"What are you going to do if you're elected and things get tough? Suspend being president? We've got a guy like that now!"

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