The 15th Grand National Assembly of Turkey existed from 14 October 1973 to 5 June 1977.There were 450 MPs in the lower house. Republican People's Party (CHP) held the plurality. Justice Party (AP) was the next party. National Salvation Party (MSP), Democratic Party (DP), Republican Reliance Party (CGP), Nationalist Movement Party (MHP) Turkey Unity Party (TBP) were the other parties.