Uh, maybe we don't watch a lot of TV news because it's all conservative? God TV execs are idiots.
...as suggested in comments, the Daily Show is exhibit A for an audience. And, it isn't as if Jon Stewart is all Republican bashing all the time, he just recognizes that questioning and mocking powerful people and institutions is a worthy endeavor. If Democrats controlled everything Stewart would be mocking them and likely have roughly the same audience. A quality liberal news channel wouldn't or shouldn't be the mirror image of the Fox News channnel. The problem with Fox isn't that it's conservative, the problem with Fox is that it's Republican.