Conservatives without Conscience by John Dean (2006)
Fantastic book. I was, at first, reluctant to read it because it was by John Dean of Watergate and Nixon infamy, however the cover jacket text and random sampling showed it was not a bunch of conservative propaganda. Especially interesting if a bit tedious are the tables at the back documenting how personalities of people lay out in conservative thinking. But mainly his basic prose is lucid and insightful.