Who supported the Nazis?

John Wheeler-Bennett was a British Tory man-about-town, historian, and witness to the rise of the Nazis. This was his estimate of who supported the Nazis in the run-off presidential election of April 1932, when the incumbent Hindenburg defeated Hitler: "the upper classes of the Protestant north, the German Crown Prince, the great industrialists of the Ruhr and the Rhineland, and the powerful agrarian interests". Supporting Hindenburg were "the embattled forces of the very elements he had fought and defeated in 1925: the Centre Party and the Roman Catholic Church, the Social Democrats and the trade unions, and the Jews." [Sir John Wheeler-Bennett, Knaves, Fools and Heroes: Europe Between the Wars (London, 1974), 50.]