"I've heard [Bernie] Sanders comments, and it's really caused me to wonder who's left in the progressive wing of the Democratic Party. Under his definition, [Barack] Obama is not progressive because he took donations from Wall Street; [Joe] Biden is not progressive because she supported Keystone; [Jeanne] Shaheen is not progressive because she supports the trade pact. Even the late, great Paul Wellstone would not fit this definition because he voted for DOMA."