Chuck Norris can gargle peanut butter
Beck is the loudest, and becoming the most visable to the mainstream because he goes on the attack. However most conservatives I talk to feel that his message is not what we need because of the snotty rhetorical methods he uses. Rush is still the man as far as conservative and constitutional thinking goes.
Actually, the GOP partisans don't fall completely in line with Rush because he will attack them as well if necessary, he is more in line with actual conservatives rather than any particular party.
Beck does land good points, the problem is he relies too heavily on hyperbole and an "in your face" style, which is fine if you are a conservative, agree with the logic, know he's factually correct, and thus can sit back and laugh. The problem is that when others need to hear the message and absorb it to figure out where they stand, they will be turned off at being the butt of his jokes, or feel slighted in some other way and will automatically tune him out. In this way he is neither a good representative of nor an effective communicator of the message.
Krauthammer and Drudge have a limited impact in a way, I voted Rush because of the size of his audience and the fact that he is much more palatable than Beck. If it were due to actual formative input I'd have to go with Alan Keys, Walter E. Williams, George Will, and a few other great minds in the conservative arena.
This is a sad reality. Not that I don't like Rush, rather enjoy his show but more that the originators of great thought are not capable of being heard in the appropriate manner.