Alliance of left-wing parties created by José Francisco Peña Gómez as a result of divisions within the ranks of the Dominican Revolutionary Party (PRD) in 1984. Party was recognized by the Central Electoral Board on January 12, 1990.
Party President is José Francisco Peña Guaba [Bloque Institucional Socialdemócrata (BIS)]. Party added in 2020 the subtitle "Peñagomista Party." Also known as "BIS y Aliados" (BIS and Allies).
