Maureen Dowd of NYT says this:
There was a poignancy about the moment, seeing Hillary crack with exhaustion from decades of yearning to be the principal rather than the plus-one. But there was a whiff of Nixonian self-pity about her choking up. What was moving her so deeply was her recognition that the country was failing to grasp how much it needs her. In a weirdly narcissistic way, she was crying for us. But it was grimly typical of her that what finally made her break down was the prospect of losing.
Her argument against Obama now boils down to an argument against idealism, which is probably the lowest and most unlikely point to which any Clinton could sink. The people from Hope are arguing against hope.