The fact remains that the DNC supported the Democratic candidate, rather than an Independent trying a hail Mary attempt to ride the party to victory. If this flap signals a campaign to start a kind of left wing analogue of the tea party, staging sit-downs and walk-outs and holding their breath 'til they turn blue when the can't set the agenda, it will show that Democrats haven't learned a thing from the Repuglican debacle. Brace for a lot of faux indignation. On the plus side, the progressive wing has not been that successful at winning primaries, and unlike the tea party, does not have a congressional caucus.