The Spanish Communist Workers' Party was a communist party founded on April 13, 1921 by the terceristas, including Virginia González Polo, Daniel Anguiano, Eduardo Torralba Beci, Manuel Núñez Arenas, Facundo Perezagua, Luis Mancebo, Isidoro Acevedo and Evaristo Gil, who had been trying to persuade the Spanish Socialist Workers' Party (PSOE) to join the Third International. When the PSOE Congress voted to join the Vienna International and refused Bolshevism, the terceristas broke away.