This was the night where we all learned that Hillary Clinton understands the moment in history we are in, and that she is smart enough and gracious enough to realize that her party is more important than personal vanity, that there are things she just cannot say about Obama because it would hurt him in the fall, and that more likely than not, she will not win the nomination.
Make no mistake: she still thinks she can win.
But her final answer sent a message to her party: this won't be decided by superdelegates. If Obama beats me in Texas and Ohio, the last thing I'm going to do is stand in the way of his nomination.
It was a moment of pure vulnerability, arguably her finest of the campaign.