2) Delusion: climate is not changing (link is external)
3) Hallucination: God ordained me to be President (link is external)
7) Sexual Preoccupation: a fervent compulsion to control when we can mate, with whom we can mate, and precisely how we are allowed to mate (which I lampoon in Why Do Politicians Want to Police Dick and Jane's Private Parts?)
9) General Oddness: Ron Paul (link is external)
Even (the not necessarily dumb (link is external)) Pope Francis appears to recognize (link is external) that “it is a serious illness, this of ideological [conservative] Christians. It is an illness, but it is not new, eh?”
Regrettably, the Republican who least exhibits anti-science stances is the only one who (tongue-in-cheek) acknowledges his mental illness:
Until Jon Huntsman becomes the sane voice of his insane party, maybe "Republican Syndrome" should be added to the DSM-V (link is external) so that crazy conservative pols can receive the mental health treatment they need. I bet "Obamacare" would even cover it.