Dennis Kucinich has always been that awesome, I think. As someone pointed out, though, they would never elect a vegetarian president here.

(Where "that awesome" means "awesome enough to be one of the two or perhaps three people ever to make me think that perhaps occasionally representative democracy doesn't necessitate the corruption of the representatives in all things". I have no doubt that if I lived in Cleveland I would know a lot of counterexamples, though.)

(Nye Bevan and Tony Benn, in case you were asking.)