Democrats Run Biggest Cities as U.S. Residents Cluster by Party

Twenty years ago, half the 12 largest U.S. municipalities had a Republican mayor. When Bill de Blasio takes office in New York on Jan. 1, none will.

As middle-class residents moved out of cities and immigrants and young people replaced them, the party lost its grip on population centers even as it increased control of governor’s offices and legislatures. The polarization has pitted urban interests against rural areas and suburbs, denying Republicans a power base. CONT.

Mark Niquette, Bloomberg