Elizabeth Warren (1st) or Thom Hartmann (2nd). I dislike all of the rest and have no interest in voting for another person from the Clinton-Obama coalition. We need to reclaim the working class and drop the elitist schtick that so many of us (including myself) have used to feel self-righteous. The Democratic Party is supposed to be about the unprivileged (workers, poor, minorities, immigrants, lgbt, etc), not appeasing business interests and being the echo chamber of the upper middle class's neo-Victorian moral supremacy.
The problem is, of course, that Elizabeth Warren is extraordinarily elitist - or is at bare minimum the favorite of the elitist snobs. I like her, but I'm not sure I sense an improvement in this direction.