The book on Rudy Giuliani is that he is too liberal on social issues to win the Republican presidential nomination. Tony Perkins, head of the Family Research Council, put it succinctly: "I don't see anyone getting the Republican nomination who is not pro-life and a staunch defender of traditional marriage." But Mr. Giuliani is running strong in Iowa and New Hampshire polls and leading most national surveys of Republicans. He's charming crowds of conservatives everywhere he goes. So it's worth wondering if Mr. Perkins is missing an undercurrent coursing through conservative politics. Republicans have just experienced a bruising midterm election...