I have been reading about the connection between Higher intelligence and liberal thinkers. Everything points toward liberals being in the group with the highest IQ. It does make sense and I can see where having a higher understanding of not only yourself, but of others around you would cause you to be more liberal. If you don't have the ability to analyze all aspects of a situation thoroughly, you would more likely fall into a more primitive mode of self protection at all cost. Hence studies indicate that the high level thinkers tend to be liberal.

http://www.sciencedaily.com/releases...0224132655.htm