The rats are abandoning the ship (even in her moment of victory):

And in a sign of the diminished optimism in the Clinton camp, one of her staunchest loyalists, James Carville, said that Obama would probably be the Democratic nominee.
“I think it’s likely Obama is the nominee, but not certain,” said Carville, the Democratic strategist who worked for Clinton in the 1992 campaign and is close to the couple. “I would have preferred another result, but I’m going to be for him.”
“Everybody is going to be with Obama,” he added, referring to Clinton staff and supporters. “I have an undated check written out for Obama. I’ll send it when this is over.”