 Joe Biden and which Donald Trump will show up tonight? Well, big stakes tonight, and frankly, big stakes for both candidates, because first of all, which Biden is going to show up and which Trump is going to show up? Are we going to have the cogent Biden? Are we going to have the gobbledygook Biden? Are we going to have the calm Trump or are we going to have the raging Trump? And which theme predominates? Both of these men are going to be trying to press a particular theme.