 In 1934, the PNR chose Calles-supporter Lázaro Cárdenas, a revolutionary general, who had a political power base in Michoacan, as the candidate of the PNR for the Mexican presidency.After an initial period of acquiescence to Calles's role intervening in the presidency, Cárdenas out-maneuvered his former patron and eventually sent him into exile.Cárdenas reformed the PNR structure, resulting in the creation of the PRM ("Partido Revolucionario Mexicano"), the Mexican Revolutionary Party, which included the army as a party sector.