 Calles became the power behind the presidency in this period, known as the "Maximato", named after his title of "jefe máximo" (maximum leader).The party brought together regional caudillos and integrated labor organizations and peasant leagues in a party that was better able to manage the political process.For the six-year term that Obregón was to serve, three presidents held office, Emilio Portes Gil, Pascual Ortiz Rubio, and Abelardo L. Rodríguez, with Calles the power behind the presidency.