On 17 January 1996, Andreas Papandreou resigned as prime minister.[1] Subsequently, the PASOK Central Committee, on the recommendation of Kostas Skandalidis, decided on the procedures for the election of the Prime Minister by the party's parliamentary group. The next day, the parliamentary group chose among Kostas Simitis, Akis Tsochatzopoulos, Gerasimos Arsenis and Ioannis Charalambopoulos, for Kostas Simitis to be the new prime minister of Greece,[2] and he took the oath of office on 22 January.[3] On 23 June, Andreas Papandreou passed away.[4]
A week later, the 4th congress was held in a tense atmosphere, where Simitis again faced Tsochatzopoulos, and while Simitis himself declared that he would resign as prime minister if he did not win, Tsochatzopoulos' supporters backed the notion of "diarchy" (i.e. Simitis remaining prime minister even if he lost the elections for the leadership of PASOK).
In the end, Simitis won over Tsochatzopoulos, 53.77%, against 46.23%, 2,732 votes, against 2,324 votes, with 17 invalid and 28 blank votes.
On 23 August of the same year, Simitis visited the President of the Republic, Konstantinos Stephanopoulos and asked him to dissolve parliament, which was granted, and elections were called for 22 September 1996.[5] In these elections, PASOK received 41.49% of the votes and elected 162 MPs, forming a majority government.[6]
The next elections for the leadership of PASOK were held at the 5th congress in March 1999, where there was no change in leadership.[7] In January 2004, Kostas Simitis resigned as leader of PASOK and the only candidate for the post was Andreas Papandreou's son, George.