satire and power

Satire is tool to counteract power, prevent it from overheating and spinning out of control (see Aristophanes).

There's no question Stewart and Corbert are biased. We wouldn't them to be any other way. Sure they poke fun at the Democrats on occasion. A slightly right-biased show wouldn't be too bad to add to the mix. In an efficient market the number of viewer-jokes (# of anti-X jokes on show A multiplied by it audience plus the same on the other show) should be proportional to the perceived power of the target of the satire.

What would be sad if the shows specialized, each moving to an extreme - why would Stewart make a anti-Democrat joke that was made by this Fox fellow the night before?