The Buckley Rule has been much invoked in recent weeks, in this space and elsewhere, and on almost every occasion it has been both misquoted and misapplied. As one who was present at the formulation, I feel obliged to record the “originalist” intention. It was the winter of 1964 and the unresolved question at NR editorial meetings, week to week, was this: Whom should the magazine support for the Republican presidential nomination? To outsiders, the question would have seemed all but settled. Issue by issue, NR gave every appearance of being all in for Barry Goldwater. Heck, there were those...