from 1975 to 1980. First years after transition Karamanlis's New Democracy went on to comfortably win the first post-junta free elections in 1974 with 220 seat out of 300, with Centre Union gaining 60 seats, Andreas Papandreou's Panhellenic Socialist Movement (PASOK) 12, while the United Left entered parliament with 8 seats. Karamanlis's big win in 1974 demonstrated a great change in Greek politics, without giving cause for action to the relatively inactive, but still dangerous junta elements. Three years later, with the 1974 crisis farther in the background, New Democracy's comfortable margin was reduced in the 1977 Greek legislative election, due to an increasing shift in Greek politics toward the left. Karamanlis continued to serve as Prime Minister until 10 May 1980, when he succeeded Tsatsos as President of Greece and then cohabited for four years (1981–1985) with his fierce political opponent and leader PASOK, the Greek socialist party, prime minister Andreas Papandreou. The political and social views expounded by PASOK were in antithesis to the center-right policies followed by the conservative government of ND (1974–1981). According to Ino Afentouli, the political expression of the metapolitefsi, namely the coming to power of a conservative leader such as Karamanlis, did not correspond to the changes which had in the meantime befallen Greek society. Thereby, this current often opposed ND's governments, disdained the old centrist political elite expressed by Center Union – New Forces (and its leader Georgios Mavros) and prompted the rise to power of PASOK and Papandreou in the elections of 1981. Since 1974 Papandreou challenged Karamanlis's choices and objected to his dominant role in defining post-1974 democracy, while other political forces of the opposition, such as Center Union – New Forces and EDA occasionally offered him an inconsistent support, especially during 1974–1977. In the elections of 1981 Papandreou used as slogan the catchword change (Greek: αλλαγή''). Some analysts, including Afentouli, regard PASOK's victory under Papandreou as a culmination of the metapolitefsi of 1974, given that the fall of the junta had not been accompanied by the rise of new political powers, but rather by the resumption of power by the old guard politicians. However Karamanlis is acknowledged for his successful restoration of Democracy and the repair of the two great national schisms by first legalising the communist party and by establishing the system of presidential democracy in Greece. His successful prosecution of the junta during the junta trials and