High Quality Content by WIKIPEDIA articles! The Panhellenic Socialist Movement, better known as PASOK is a Greek centre-left political party. In 1981 PASOK formed the first socialist government in Greece's history, and subsequently governed the country for most of the 1980s, 1990s and early 2000s. PASOK has served as the main opposition party since the general election of 2004. It is a member of the Party of European Socialists and the Socialist International. In the European Parliament it has 8 out of 22 Greek MEPs. On 31 January 2006, the party's president, George Papandreou, was elected President of the Socialist International, the worldwide organisation of social democratic, socialist and labour parties. Following the 2009 legislative election, PASOK became the majority party in the next session of Parliament and Papandreou was chosen to be the next Prime Minister.