what does "had gone to Nixon in 1960 by a handsome margin"mean?
Houston lacked the ardor of San Antonio. The turnout was really about 175,000. It was no Dallas, but liberals were a minority here; Houston's Harris County had gone to Nixon in 1960 by a handsome margin. Today the local right wing had erected several noisome posters along the Presidential route: "WATCH KENNEDY STAMP OUT YOUR BUSINESS,” “BAN THE BROTHERS,” “KENNEDY, KHRUSHCHEV, AND KING”; and a biplane over the field tugged a warlike streamer reading "coexistence is surrender." Yet despite Kennedy's tardy arrival—his visit to the oxygen chamber had thrown everything off—the dominant mood was enthusiastic. Thomas waved at his applauding constituents and bowed to the President. "Well?" he asked proudly. "O.K.," Kennedy laughed. "You win."