Atrios describes perfectly, in my opinion, the Democratic frontrunners:

Shorter Candidates

Obama: The system sucks, but I’m so awesome that it’ll melt away before me.

Edwards: The system sucks, and we’re gonna have to fight like hell to destroy it.

Clinton: The system sucks, and I know how to work within it more than anyone.

I still like Edwards, by the way, for those of you keeping score.

UPDATE: Ezra Klein agrees that this is a good distillation of Edwards’ message, but responds, essentially, “Great. How?”