I think that comedy provides a huge and largely unrecognized influence on a person's view of the world. When someone or something is funny, we not only remember it, but it can carry a great deal of weight. We can more easily see and accept the truth of an idea or position if it is presented as comedy, especially if something hypocritical is being pointed out.
George Carlin, Janeane Garofalo, Stephen Colbert, Jon Stewart, Ricky Gervais, Ben Elton, Penn & Teller, Bill Maher, Bill Hicks, and Julia Sweeney are just a few whose political/religious positions carry weight because they are funny. There are many, many more.
There are a few funny comedians from the political or religious right out there to compete, but there are only a few and their popularity is not all that great. There's Dennis Miller, P.J. O'Rourke, and Drew Carey. But they have a small and niche audience, at best. The most popular of them seem to keep away from non-political and non-religious topics, too.
Those on the political and religious right seem to like to be serious and be preached to through radio, television and/or the pulpit. Those on the political and religious left like to laugh and discuss. This is the way it seems, anyway. There are exceptions, of course.
What does this say about how people like to be stimulated? About how they are influenced? About how they see the world? Is it that people who like to laugh are more likely to be on the political or religious left, or does being on the political or religious left carry with it a tendency to want to laugh?
Is it even possible for a right-wing comedian to sway opinion based on their comedy?