My guess?

Jon Stewart's audience liked it better when it wasn't about influencing an election. Certainly holds true for THIS member of his audience. Also, Stewart's younger demographic isn't as enamored with the elitist leftists in Hollywood as the MTV crowd would have you think. We should start a betting pool on how long it takes the two major parties to figure out that the generation currently 18-35 years old is largely libertarian (small "l").