Saruman was not a 'freak'; Morthoron shows examples of Saruman's political behaviour where he achieved much with the resources he had. As for the Hitler thing, bringing him up is likely to annoy someone out there, but implying that Hitler was not a capable politician is just strange.
But we're speaking about modern US politics. Saruman would feel far more at home there. Gandalf would despise the way image and slander are more important than the actual governing of people's lives.
Where so much power is concerned Gandalf would wish the wise to govern, and not the greedy rich. This suggests that Gandalf would not be interested in promoting democracy, at least to me.