Three marriages. Two divorces. Add up the numbers, and Newt Gingrich is an improbable candidate to win over the influential social-conservative bloc in the GOP. But in this unconventional cycle, both national and early-primary-state evangelical and social-conservative leaders are signaling that Gingrich’s personal history is no insurmountable obstacle, although some would like to see him further address his past decisions. “In general, I think people who have experienced the ultimate form of forgiveness themselves are willing to extend mercy and extend forgiveness to others,” says Ralph Reed, founder and chairman of the Faith and Freedom Coalition. “In Newt’s case, he’s...