 Well, certainly it's substance, but I think even more than that, it's the way Biden comes across. Age has turned out to be a millstone around his neck, and he has got to show that he is forceful and energetic for the entire 90 minutes. It's difficult to do for people of any age, but he's got a lot on the line. I think actually he's got more on the line than Donald Trump does, because even though the race is very close,