The Hungarian Socialist Workers' Party (Hungarian: Magyar Szocialista Munkáspárt, pronounced [ˈmɒɟɒr ˈsot͡sijɒliʃtɒ ˈmuŋkaːʃpaːrt], MSZMP) was the ruling Marxist–Leninist party of the Hungarian People's Republic between 1956 and 1989. It was organised from elements of the Hungarian Working People's Party during the Hungarian Revolution of 1956, with János Kádár as general secretary. The party also controlled its armed forces, the Hungarian People's Army.
Like all other Eastern Bloc parties, the MSZMP was organized on the basis of democratic centralism, a principle conceived by Vladimir Lenin that entails democratic and open discussion of issues within the party followed by the requirement of total unity in upholding the agreed policies. The highest body within the MSZMP was the party Congress, which convened every five years. When the Congress was not in session, the Central Committee of the MSZMP was the highest body. Because the Central Committee met twice a year, most day-to-day duties and responsibilities were vested in the Politburo. The party leader was the de facto chairman of the Politburo and a de facto chief executive of Hungary. At various points he served as the prime minister in addition to being party leader.
