He enrolled in the Peruvian Democratic Movement, the same one that launched Manuel Prado's candidacy for the 1956 general elections, called by the Odría dictatorship. He ran as a candidate for the second vice presidency, while Luis Gallo Porras was a candidate for the first vice presidency. In those elections in which the votes of the APRA militants decided Prado's victory, as he had promised to legalize that party. Thus began the so-called "Coexistence" between Pradismo and Aprismo.
