In their minds, intellectuals have had a lot of power for a long time, and the world is still messed up, so let's give some "common people" a shot. Hence Bush, and now one step further, Palin.
It's true, and this cracks me up. If there ever was a spoiled, rotten, rich kid brat with connections who had everything handed to him on a silver platter, including a governorship and a presidency, it was George W. Bush Jr.