Biden famously said, "I mean, you got the first mainstream African American who is articulate and bright and clean and a nice-looking guy," and he went on to become Obama's choice for VP.
Can we infer that they were pretty much all saying that?
ADDED: I'm very interested in this "unless he wanted to have one" idea. I'm picturing them trying to figure out whether it might be effective, at least some of the time, to dial up the dialect and just how far would be appropriate. I'm thinking maybe Hillary paid attention...