I honestly don't know much about him yet but I want him to be competitive with Kerry and Edwards so I can have a good idea of who to eventually choose. I've done some investigation. He's got good buzz. Earlier today I found an interview synopsis that serves him faint praise.
Ultimately I'm anticipating that he might not be a very perfect candidate for me, so I imagine I'll get more involved in voting activism so we can all exercise more choice in finding candidates that truly are right for us, without being penalized for it.