Sarah needs to run for Senate as an Independent. She’d win in a walk.
While she probably would win, the atmosphere in DC in the near future, with Big Zero and The Democrats Dance Troupe win, is poison.
Sarah Palin is a true conservative, a fresh face, a plain-spoken leader.
I would rather watch her continue to govern Alaska and maybe even run for re-election (if she's not term-limited, not sure of Alaska law on that); and re-enter the field of candidates closer to 2012.
If she went to DC before then, she would end up covered with the soil and smell from the RINOs around her.