Who tells liberals that they are smart and the rest of American is stupid?

I know liberals that have dropped out of community, yet mock republicans and call them idiots. Where has this false sense of elitism come from? Why do people that watch the comedy network for their news think they are so much more intelligent than the rest of America? And why do they constantly mock their own country by telling the world that Americans are stupid because the 04 election didn't go exactly the way they demanded it go? Will they do the same if Rudy Giuliani wins in 08?