Created on the eve of the presidential election that resulted after the fall of Ibáñez in 1930, the Social Radical Party was made up of members of the Radical Party.
It was formed in opposition to the candidacy of the radical Juan Esteban Montero, who was supported by the traditional right-wing.
Its main founders were José Eliseo Peña Villalón, Benjamín Manterola and Aurelio Núñez Morgado.
He participated in the Federation of the Left, which was a coalition failed to support the candidacy of Arturo Alessandri Palma.
The following is a list of the presidential candidates supported by the Socialist Radical Party.