Emilio Cándido Portes Gil (Spanish pronunciation: [eˈmiljo ˈportes xil]; October 3, 1890 – December 10, 1978) was President of Mexico from 1928 to 1930. He served following the assassination of president-elect General Álvaro Obregón, who had been president 1920-1924. Since the Mexican Constitution of 1917 forbade re-election of a serving president, the out-going president Plutarco Elías Calles could not formally become president.