Plouffe: She can't catch us

As we wrote last night, Obama has begun to make his own inevitablity case, and David Plouffe made it explicit on a conference call this morning, telling reporters that it's now "next to impossible" for Clinton to surpass what he says is a 136-person lead among pledged delegates.

"The only way she could do it is by winning most of the rest of the contests by 25 to 30 points," he said. "Even the most creative math really does not get her, ever, back to even in terms of pledged delegates."

"This is not about votes -- it's about delegates," Plouffe said.

The other half of this case, of course, is that superdelegates will and/or should follow the pledged delegates.