Every few years, it seems, conservative religious groups, quiescent or unnoticed, come blazing back onto the national scene, and the secular press reacts like the bad guy in the 1971 western Big Jake who says to John Wayne, “I thought you were dead.” Wayne drily answers, “Not hardly.” Now, in The Evangelicals: The Struggle to Shape America, Frances FitzGerald answers the recurrent question, “Where did these people come from?” She says there is no mystery involved. They were always here. We were just not looking at them.