In each party, the donors and managers and professionals have far more in common with those of the other party—in terms of education, lifestyle, and values—than they do with most of their own party’s non-elite voters, whom party elites manipulate...The consolidation of almost all political, social, and economic power in a single national ruling class whose members congregate in a few major cities is unprecedented in American history, though not in the history of Latin America or France or Britain.