text:  as if it is a major, major moment. Anything that happens there, a mistake, a gaffe, that can easily define you for the rest of the campaign. And to a large extent, because they've been there before, they know each other's idiosyncrasies, they know each other's verbal tics, but they also know that you have to expect the unexpected. Okay, so is it issues tonight, or is it performance? What are the campaigns focusing in on? What do they think is actually going to hit with the public?