Robert Gibbs: Joe Biden ‘Has Got to Win South Carolina, He Just Has To’

EXCERPT:

GIBBS: “And so you may have five go on, you may not have five that are plausible. And I think, you know, an existential crisis tonight for Vice-President Biden, he’s got to win South Carolina. He just has to, and he has to prove that, that electorate that hasn’t participated fully yet, when it does, is still for him.”