Although the Díaz regime was ousted in May 1911, President Francisco I. Madero, "the Apostle of Democracy," continued the legislative building's construction until 1912, when the money ran out.[7] The structure remained unfinished until 1938, and completed during the presidency of Lázaro Cárdenas. The open building was designed by Carlos Obregón Santacilia in an eclectic Art Deco and Mexican socialist realism style, over the existing cupola structure of the Palacio Legislativo Federal (Federal Legislative Palace). Oliverio Martínez designed a stone sculpture for the structure,[8] with Francisco Zúñiga as one of his assistants.