Schweitzer.
While I'd prefer Shumlin, Franken, Warren, Grayson and Feingold on ideological, winning is more important.
Schweitzer's actually pretty good on some leftist issues; he supports Canada-style healthcare, for example. And he's been a champion for some environmental causes (when an oil spill happened in his state, he demanded that BP or whoever clean it up).
Yeah, that's why I said him > the other frontrunners. None of the really left-wing guys would have a hope in hell, whereas his GE strength makes him one of strongest candidates in years.
But we all know they're gonna pick Cuomo....