She's Al Gore Part II if she runs. We're (and by this I mean Democrats) just going to give it to her. I do think she'll be an effective leader. We might be years removed from her crusade for healthcare reform as First Lady, but I feel she's still progressive at heart.
One big difference: she will have the Obama campaign behind her. Expect a beat-the-cheat strategy that allows multiple ways of winning so that the election does not boil down to what results some governor wants. Such was the difference between a Gore loss and an Obama win. Gore should have gone for some other state (Nevada, New Hampshire, or Ohio) in addition to Florida to hedge his chances.