(CNN) - For the most part, John McCain has been coming across as a strong conservative. He's talked unity - but not like Barack Obama, who has made it a central theme of his campaign. Earlier, McCain talked about issues like global warming where he disagreed with his party - but the main message here is that he's a strong conservative, who can be counted on to take socially conservative positions.
Both candidates are doing very well, but you're seeing a very clear difference. Obama has come across as thoughtful, subtle and nimble. McCain is disciplined and conservative, with an emphasis on his personal appeal.
Both are coming across very well in this forum - it's a good format. Strong questions and strong answers, and we see the differences between them clearly - but no squabbling. I'm not sure it would have been better if they were on stage together. This is better than a debate: you get actual answers to the questions, instead of them trying to score points off each other. You get real insight into the way each man thinks.