 In 1983 the Radical Party was one of the creators along with the Christian Democrat, Liberal, Social Democrat parties and the renewed sector of the Socialist Party of Chile, of the Democratic Alliance coalition opposing the Pinochet regime.Another area of radicalism, led by Luis Fernando Luengo, came to the United Left and founded the Democratic Socialist Radical Party (PRSD).Both parties supported the option NO in the plebiscite of 1988 and proclaimed Patricio Aylwin as their presidential candidate, but in the parliamentary elections of 1989 were presented in different lists; the PR was part of the coalition, while the PRSD participated in the list Unity for the Democracy with Broad Party of Socialist Left.