Well, Joe Biden did what he needed to do. He threw the D's some red meat. He fought hammer and tong with Paul Ryan. He enjoyed himself immensely.
Paul Ryan also did what he needed to do. He showed himself mature and ready. He showed himself to be on top of the facts. He defended Romney well.
On style, Paul Ryan won going away. Biden's laughs, his condescension, his sighs--were just flat out annoying.
Both side's guy did what he needed to do, and both sides can take away a win from this one.
The question though--is--what will independents and undecideds think of it? My guess? Not a good night for the President. But it won't move the needle.