I think you need people of principle, of character, that are leaders, that take stands on important tough issues that will affect the future of this country.
I find that when I play reality-based characters, it is only as fun for me if I have a lot of time to do research. If I don't it just isn't exciting but if I do, it can be fun because I can learn about that person and the world that they live in and I can become somebody else.