Dave Letterman: " ... And I’m wondering, if he had picked Sarah Palin before you picked Joe Biden, is there a chance that maybe you would have selected somebody else? Would that have affected your choice?”
Obama: “You know, the way I thought about it was, ‘Who’s going to help me govern? Who’s the person I want in the room if we’ve got a big decision to make? Who’s going to be able to give me good counsel, good advice, who’s able to maybe have some ideas that I don’thave or give me a perspective that I haven’t seen, and I think that nobody can do that better than Joe Biden.” (audience applauds) “And I know what he cares about and what he stands for - I think he’s going to be a great choice.”