was held in France, with the participation of 90 delegates, who approved a line of impetus to the student and labor movement. Thus it collaborated in the formation of union Working Commissions (CCOO). The line proved to be successful, and laid the foundations for the growing hegemony of the party in the fight against the Franco regime in Catalonia. Its influence among intellectuals and Catalan culture also grew. PSUC continued in the 1960s decade organizing the neighborhood movement, workers commissions, the Democratic Student Union, and other mass experiences. In 1969 it participated in the Coordination of Political Forces of Catalonia and in 1971 in the Assembly of Catalonia (Assemblea de Catalunya), where his representative was Antoni Gutierrez Díaz. In 1973, the III Congress of the PSUC was held with the participation of 200 delegates. In 1975 he took part in the Council of Political Forces of Catalonia, sending Josep Solé i Barberà and Gregori López Raimundo as representatives. The PSUC was the largest opposition party in Catalonia and upon Spain's transformation into a democratic state and constitutional monarchy, it became a mass party with more than 40.000 active members. In 1977, during the Spanish transition to democracy, the PSUC was legalized after the PCE. He participated in the negotiations for the restoration of the Autonomy of Catalonia and the Statute. In the first elections to the Parliament of Catalonia (1980) it was the third political force, with nearly 600,000 votes and 25 elected MPs. PSUC aligned itself with the Eurocommunism of the Italian, Spanish and French Communist parties, but the rejection of much of the grassroots and some leaders led to the withdrawal of this term in the V Congress, in 1981. The party experienced a severe crisis and division. Tensions continued between the three factions, so-called Eurocommunists led by Antoni Gutierrez and Lopez Raimundo, the 'Leninists' led by Paco Frutos and the 'Historic' leftist prosovietic faction led by Pere Ardiaca. Under pressure from Santiago Carrillo (General Secretary of PCE) Eurocommunists and 'leninists' joined forces to expel prosoviet faction, led by Pere Ardiaca who would found the PCC (Communists Party of Catalonia) in 1982 claiming legitimacy of V Congress. After the split, the election results fell sharply, with only 160,000 votes for the PSUC and 71,000 for the PCC in the 1984 Catalan parliamentary election. From 1986 onwards, the strong mobilizations against Spain's accession to NATO alliance, and the NATO