Well, she is a hockey mom.
I think perhaps my main requirement for a public leader is, above all else, intellectual curiosity. You can come up with a different conclusion than I would, but if you are at least looking at facts, listening to alternative solutions, then I can at least respect that you are participating.
Regretfully, I can't really name a single Republican in public office who meets that definition, though I'm certain they are out there.
And this? This is from their shining star, a likely 2012 Presidential Candidate:

Now, I'm not pretending that the Healthcare Summit was all that effective or useful. (Though I think it was, in some political ways.) But there are probably ten people out there who think they have a shot at the Republican nomination next year, and at least the same amount of Democrats who, if Obama wasn't running, would feel similarly. I'm reasonably sure that Sarah Palin is the only one who wasn't paying attention today.
A wholly unserious person, who is taken credibly as a potential leader. Wow.