The Greek constitutional crisis of 1985 was the first constitutional dispute of the newly formed Third Hellenic Republic after the fall of the Greek Junta in 1974. It was initiated as a political gamble of Prime Minister Andreas Papandreou by suddenly declaring that he would not support the re-election of Konstantinos Karamanlis for a second term as President of the Republic. Papandreou also proposed constitutional amendments designed to further increase the power of his position by reducing the presidential powers, which were acting as checks and balances against the executive branch.
Papandreou instead backed Supreme Court justice Christos Sartzetakis, who was popular with left-leaning voters for his investigation of the politically motivated murder of Grigoris Lambrakis in 1963.