Krauthammer's Hail Mary Rule: You get only two per game. John McCain, unfortunately, has already thrown three. The first was his bet on the surge, a deep pass to David Petraeus who miraculously ran it all the way into the end zone.
Then, seeking a game-changer after the Democratic convention, McCain threw blind into the end zone to a waiting Sarah Palin. She caught the ball. Her subsequent fumbles have taken the sheen off of that play, but she nonetheless invaluably solidifies his Republican base.
When the financial crisis hit, McCain went razzle-dazzle again, suspending his campaign and declaring he'd stay away from the first presidential debate until the financial crisis was solved.
He tempted fate one time too many.