Legislative elections were held in Greece on Sunday, 17 June 2012, to elect all 300 members to the Hellenic Parliament in accordance with the constitution, after all attempts to form a new government failed following the May elections. If all attempts to form a new government fail, the constitution directs the president to dissolve a newly elected parliament, and then to call for new parliamentary elections within 30 days of the dissolution. The president announced at 16 May the date for the new election, and signed the formal decree to dissolve the parliament and call for the election at 19 May.

The Panhellenic Socialist Movement, known mostly by its acronym PASOK, is a social-democratic political party in Greece. Until 2012 it was one of the two major parties in the country, along with New Democracy, its main political rival. In the June 2023 Greek legislative election it once again held firm on to its position of one of the ”big three” political parties of Greece.