With Tim Pawlenty out of the presidential race, it is now fairly clear that the GOP candidate will either be Mitt Romney or someone who makes George W. Bush look like Tom Paine. Of the three most plausible candidates for the Republican nomination, two are deeply associated with a theocratic strain of Christian fundamentalism known as Dominionism. If you want to understand Michele Bachmann and Rick Perry, understanding Dominionism isn’t optional.

Put simply, Dominionism means that Christians have a God-given right to rule all earthly institutions. Originating among some of America’s most radical theocrats, it’s long had an influence on religious-right education and political organizing. But because it seems so outré, getting ordinary people to take it seriously can be difficult. Most writers, myself included, who explore it have been called paranoid. In a contemptuous 2006 First Things review of several books, including Kevin Phillips’ American Theocracy, and my own Kingdom Coming: The Rise of Christian Nationalism, conservative columnist Ross Douthat wrote, ‘the fear of theocracy has become a defining panic of the Bush era.