I was there for the “peasants with pitchforks” speech. Pat Buchanan was holding forth in a crowded room at the Sheraton Hotel in Nashua, N.H., a couple of days before the 1996 GOP primary. The Republican Establishment’s favorite for the nomination was Bob Dole, but Dole, for all his solid credentials and admirable history as a war hero and congressional leader, was never someone to incite a political fever, never one to tap the more visceral emotions of the rowdy electorate. So here came Buchanan, the TV pundit and unapologetic nativist, and in the icy environs of the New Hampshire...