Personally I think Dean speaks with a strength and conviction that overcomes the stereotype. (I hope Simon some day will too, he's got an outstanding mind.)
There is no question in my mind that if Dean or Rosenberg were a Southern black preacher, or a cattle rancher from the midwest, or a woman, they would be far more effective advocates than they are.
But honestly the spokesperson role should be taken less seriously than the budget manager role - would prefer to see as much discussion from all of you about that as the word "Jew" has apparently set off.