 The first thing that the vice president has to do is integrate herself into a campaign structure. And that's different when you change players in the middle of a game. It's just tricky to get yourself into the new system. Who do you trust? Who do you give decision-making power to? Then she's gotta lock down the nomination and do it in a way that doesn't bruise those feelings. It brings in people who might have not liked the way this happened.