 Obregon had been more lenient to Catholics during his time in office than Calles, but it was also generally accepted among Mexicans, including the Cristeros, that Calles was his puppet leader.Two weeks after his election, Obregón was assassinated by a Catholic radical, José de León Toral, which gravely damaged the peace process.In September 1928, Congress named Emilio Portes Gil as interim president with a special election to be held in November 1929.