AreConservatives just crazy?
"Then there's "terror management theory," which, as best I can make out, posits that an inordinate fear of death "engenders a defense of one's cultural worldview" and therefore a resistance to outsiders and new ideas. Conservatives are also said to "score lower on measures of extraversion" and "general sensation seeking," which I think is a polite way of saying that they don't get enough sex."
From Slate Magazine.