At the Corner, John Pitney frets about McCain’s debate-persona before offering a fix:

What demeanor should McCain display tonight? Angry doesn’t work. Solemn doesn’t work.  ake-smiley doesn’t work. Instead, McCain should go back to his roots and unleash his inner smart-aleck. If Obama accuses him of being erratic in a crisis, he should say: "So I’m erotic in a crisis? Who knew?"

This approach has a couple of advantages…

 What voter isn’t reassured by the thought of a 70-year old fucking?