Barack Obama had his own take on the situation: "Part of the reason that Republicans I think are obsessed with you, Hillary, is because that is a fight they're very comfortable having."
Unfortunately, he seems not to have done enough last night. He could've made himself more distinct, he could've attacked the GOP, he could've appeared tougher. At this point, Clinton seems to have walked away with it. I think that was the last chance for Edwards and Obama to do something dramatic, and it didn't happen. It looks like the MSM might try to hammer this driver's license question a bit in order to hurt Clinton somehow, but that'll pass. I don't think anyone can touch her now.
The advantage of her getting the nomination, of course, is that she is masterful at these kinds of debates, and is tough as nails in a way that Obama and Edwards aren't. As much as I want to like Obama, I would cringe to see him in a debate against someone like Giuliani or Romney, because I think he would just pull his punches.