Click here to read more of what the vice-presidential candidates had to say and see our series, "Presidential Questions."
Katie Couric: What previous vice president impresses you the most and why?
Sarah Palin: Oh my goodness. It would have to be, vice presidents, uh, just a candidate, and that would have to have been Geraldine Ferraro, of course. That's an easy one for me because she's, she's the one who first shattered part of that glass ceiling anyway in American politics. So it would be she as a candidate.
Couric: What about as an actual vice president if you had to name one?
Palin: My goodness. I think those who have gone on to the presidency, George Bush Sr., having, kind of learned the ropes in his position as VP and then movin' on up.
Joe Biden: Lyndon Johnson. For all the foibles he had as president, in people's minds, he really knew how the system worked.
He was able to be a significant facilitator of a new frontier, new policy. People in the Congress knew him, knew he knew a lot. And so I hope one of my roles as vice president will be as the person actually implementing Barack Obama's policy. You gotta get the Congress to go along with it. And it's presumptuous to say, but I know it pretty well. And I think I am fairly respected on both sides of the aisle.