The Communist Party of Spain (, PCE) is the third-largest national political party in Spain. It is the largest member organization of the United Left electoral coalition and has influence in the largest trade union in Spain, Workers' Commissions (CCOO). The PCE was characterized by the struggle against the Franco dictatorship, during which period it was illegal. It was legalized in 1977 by Adolfo Suárez as one of the forces necessary to establish democracy in Spain.