Marc Ambinder makes a key point:
The puzzler of the night, to me, is why Clinton refused to answer a simple question that she clearly has an answer to: And that is: Is Barack Obama ready to be commander in chief? Clearly -- the answer, for Clinton, is “yes.” It’s her best argument against him. But twice she avoided it and instead recapitulated her own resume.At this point, she has nothing to lose by making that argument. The fact that she did not suggests to me that she is thinking, already, about life as a Senator from New York supporting Barack Obama and did not want to give John McCain the soundbite that could doom Obama’s candidacy. I don’t think she’s conceded the nomination in her mind, but I do think she had two temporal audiences in mind when she answered: Democrats now and the nation in the fall.