I thought both candidates probably considered themselves as having a successful outing there - and they're probably both right. The crowd was definitely more favorable to the conservative viewpoints, but I thought Obama (as he has always done, really) did a great job of answering questions on abortion and stem cell research in respectful and honest ways that (surprisingly) seemed pretty well received given the makeup of the crowd.
Granted, I'm biased, but it did seem to me that McCain was looking for any possible openings to just reiterate stump speech talking points ("I'll follow him to the gates of hell!"/"drill now!") that had little to do with the actual questions asked, while Obama was giving a little more thought to actually directly answering the questions put to him. It seemed to me that for nearly every other question that McCain got, his answer amounted essentially to "I was a POW". It's an amazing sacrifice he made for his country, and I'd never question that, but the way in which he's milking that experience for all it's worth makes me wonder if he won't reach a point of diminishing returns on it and/or cheapen its value (as perceived by voters) through endless repetition.