 They did. They wanted to be a choice between two candidates, not a referendum on the incumbent. When you've got a race that's this tight, anything could tip it in one way or the other. You know, tonight may end and it might not change the state of the race. But when it's this tight, you can't leave anything to chance, which is why the president has spent many days working on this campaign. A couple of things that strike me about this campaign, or this debate, I should say.