It goes without saying that if any Republican runs for President, they think they can beat Obama.
But Barbara Walters asks the redundant question, and in the interest of exhaustive coverage, here's Palin's answer.
(For Palin fans, I feel you on this one. The question is an implicit attack on her credibility. I doubt Walters would ask it of Romney or Pawlenty).
The full interview airs on December 9.