Because disgust is specifically associated with perceived violations of purity-related norms important to those on the right, disgust sensitivity should be especially associated with conservative attitudes on issues related to sexual purity...
Compared to people on the left, those on the right tended to report being more disgust sensitive.
The finding of a strong relationship between self-reported disgust sensitivity and attitudes toward gay marriage comports nicely with conventional wisdom that for some people opposition to homosexual rights derives from a sense that the very thought of homosexual sex is disgusting and raises the question of why some people would find this thought disgusting while many others do not.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0025552The article itself links to a number of previous studies on the innate qualities that strongly correlate with certain political attitudes. Fascinating stuff.
