If we add up the points across all six categories, the clubhouse leader, with 4.5 points, is Herman Cain of Georgia, the radio talk show host and entrepreneur who is beginning to get more attention lately. He’s the most Huckabee-like of the other Republican candidates. Closely behind him, with 4 points each, are Sarah Palin, Newt Gingrich, and Michele Bachmann. Mr. Pawlenty, Mr. Santorum and (somewhat to my surprise) Mr. Paul also score reasonably well.

Other candidates, however, share little in common with Mr. Huckabee. Jon Huntsman of Utah might be closest to his opposite number — socially moderate rather than socially conservative, Mormon rather than evangelical Protestant, rarely seen in the cornfields of Iowa or on the airwaves of Fox News. Mr. Romney doesn’t share much in common with Mr. Huckabee — although his not having to compete against Mr. Huckabee in Iowa would be a big deal. Donald Trump and Mr. Huckabee don’t have much in common.