One-party state

The Party of Labour of Albania (Albanian: Partia e Punës e Shqipërisë, PPSh), was the ruling and sole legal party of Albania during the communist period (1945–1991). It was founded on 8 November 1941 as the Communist Party of Albania (Partia Komuniste e Shqipërisë, PKSh) but changed its name in 1948 following a recommendation by Joseph Stalin, who considered the name more appropriate since the majority of the party's membership was made up of the peasantry instead of the proletariat. The party was dissolved on 13 June 1991 and succeeded by the Socialist Party of Albania and the new Communist Party of Albania. For most of its existence, the party was dominated by its First Secretary, Enver Hoxha, who was also the de facto leader of Albania from 1944 until his death in 1985.

The Socialist Federal Republic of Yugoslavia (commonly abbreviated as SFRY or SFR Yugoslavia), known from 1945 to 1963 as the Federal People's Republic of Yugoslavia, commonly referred to as Socialist Yugoslavia or simply Yugoslavia, was a country in Central and Southeast Europe. It was established in 1945, following World War II, and lasted until 1992, dissolving amid the onset of the Yugoslav Wars. Spanning an area of 255,804 square kilometres (98,766 sq mi) in the Balkans, Yugoslavia was bordered by the Adriatic Sea and Italy to the west, Austria and Hungary to the north, Bulgaria and Romania to the east, and Albania and Greece to the south. It was a one-party socialist state and federation governed by the League of Communists of Yugoslavia, and had six constituent republics: Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia, and Slovenia. Within Serbia was the Yugoslav capital city of Belgrade as well as two autonomous Yugoslav provinces: Kosovo and Vojvodina.

The country emerged as Democratic Federal Yugoslavia on 29 November 1943, during the second session of the Anti-Fascist Council for the National Liberation of Yugoslavia midst World War II in Yugoslavia. Recognised by the Allies of World War II at the Tehran Conference as the legal successor state to Kingdom of Yugoslavia, it was a provisionally governed state formed to unite the Yugoslav resistance movement. Following the country's liberation, King Peter II was deposed, the monarchical rule was ended, and on 29 November 1945, the Federal People's Republic of Yugoslavia was proclaimed. Led by Josip Broz Tito, the new communist government sided with the Eastern Bloc at the beginning of the Cold War but pursued a policy of neutrality following the 1948 Tito–Stalin split; it became a founding member of the Non-Aligned Movement, and transitioned from a command economy to market-based socialism. The country was renamed Socialist Federal Republic of Yugoslavia in 1963.

Ba'athist Syria, officially the Syrian Arab Republic (SAR), was the Syrian state between 1963 and 2024 under the one-party rule of the Syrian regional branch of the Arab Socialist Ba'ath Party. From 1971 until its collapse in 2024, it was ruled by the Assad family, and was therefore commonly referred to as Assadist Syria or the Assad regime.

The regime emerged in 1963 as a result of a coup d'état led by Alawite Ba'athist military officers. Another coup in 1966 led to Salah Jadid becoming the country's de facto leader while Nureddin al-Atassi assumed the presidency. In 1970, Jadid and al-Atassi were overthrown by Hafez al-Assad in the Corrective Revolution. The next year, Assad became president after winning sham elections.

Ba'athism, also spelled Baathism, is an Arab nationalist ideology which advocates the establishment of a unified Arab state through the rule of a Ba'athist vanguard party operating under a revolutionary socialist framework. The ideology is officially based on the theories of the Syrian intellectuals Michel Aflaq (per the Iraqi-led Ba'ath Party), Zaki al-Arsuzi (per the Syrian-led Ba'ath Party), and Salah al-Din al-Bitar. Ba'athist leaders of the modern era include the former president of Iraq Saddam Hussein, and former presidents of Syria Hafez al-Assad and his son Bashar al-Assad.

The Ba'athist ideology advocates the "enlightenment of the Arabs" as well as the renaissance of their culture, values and society. It also advocates the creation of one-party states and rejects political pluralism in an unspecified length of time—the Ba'ath party theoretically uses an unspecified amount of time to develop an "enlightened" Arab society. Ba'athism is founded on the principles of Arab nationalism, pan-Arabism, and Arab socialism, as exemplified by its slogan "Unity, Freedom, Socialism".

In the Soviet Union, a Union Republic (Russian: Сою́зная Респу́блика, romanized: Soyúznaya Respúblika) or unofficially a Republic of the USSR was a constituent federated political entity with a system of government called a Soviet republic, which was officially defined in the 1977 constitution as "a sovereign Soviet socialist state which has united with the other Soviet republics to form the Union of Soviet Socialist Republics" and whose sovereignty is limited by membership in the Union. As a result of its status as a sovereign state, the Union Republic de jure had the right to enter into relations with foreign states, conclude treaties with them and exchange diplomatic and consular representatives and participate in the activities of international organizations (including membership in international organizations). The Union Republics were perceived as national-based administrative units of the Union of Soviet Socialist Republics (USSR).

The Soviet Union was formed in 1922 by a treaty between the Soviet republics of Byelorussia, Russian SFSR (RSFSR), Transcaucasian Federation, and Ukraine, by which they became its constituent republics of the Union of Soviet Socialist Republics (Soviet Union). For most of its history, the USSR was a one-party state led by the Communist Party of the Soviet Union. Key functions of the USSR were highly centralized in Moscow until its final years, despite its nominal structure as a federation of republics; the light decentralization reforms during the era of perestroika (reconstruction) and glasnost (voice-ness, as in freedom of speech) conducted by Mikhail Gorbachev as part of the Helsinki Accords are cited as one of the factors which led to the dissolution of the USSR in 1991 as a result of the Cold War and the creation of the Commonwealth of Independent States.

The Polish People's Republic (1952–1989), formerly the Republic of Poland (1947–1952), and also often simply known as Poland, was a country in Central Europe that existed as the predecessor of the modern-day democratic Republic of Poland. With a population of approximately 37.9 million near the end of its existence, it was the second most-populous communist and Eastern Bloc country in Europe. It was also where the Warsaw Pact was founded. The largest city and capital was Warsaw, followed by the industrial city of Łódź and cultural city of Kraków. The country was bordered by the Baltic Sea to the north, the Soviet Union to the east, Czechoslovakia to the south, and East Germany to the west.

The Polish People's Republic was a unitary communist state established in the country after the Red Army's takeover of Polish territory from German occupation in World War II. Communist control was strengthened through electoral fraud in the 1946 Polish people's referendum and the 1947 Polish parliamentary election. The Polish United Workers' Party (PZPR) became the dominant political faction in a one-party state, but the country had more liberal policies than other socialist states due to its strategic location in the Cold War and internal opposition. The state's official name was the "Republic of Poland" (Rzeczpospolita Polska) between 1947 and 1952 in accordance with the temporary Small Constitution of 1947. The name "People's Republic" was introduced and defined by the Constitution of 1952. The Polish People's Republic was dissolved following the Revolutions of 1989 and the 1990 Polish presidential election, but the post-communist Third Polish Republic retained the 1952 constitution, with amendments, until the introduction of the current constitution on 17 October 1997, abolishing the socialist structure entirely and replacing it with a parliamentary system that has remained in place to the present-day.

The Polish United Workers' Party (Polish: Polska Zjednoczona Partia Robotnicza [ˈpɔlska zjɛdnɔˈt͡ʂɔna ˈpartja rɔbɔtˈɲit͡ʂa], PZPR) was the communist party which ruled the Polish People's Republic as a one-party state from 1948 to 1989. The PZPR had led two other legally permitted subordinate minor parties together as the Front of National Unity and later Patriotic Movement for National Rebirth. The Polish United Workers' Party had total control over public institutions in the country as well as the Polish People's Army, the UB and SB security agencies, the Citizens' Militia (MO) police force and the media.

The falsified 1947 Polish legislative election granted the Communist Polish Workers' Party (PPR) complete political authority in post-war Poland. The PZPR was founded forthwith in December 1948 through the unification of the PPR and the Polish Socialist Party (PPS). From 1952 onward, the position of "First Secretary" of the Polish United Workers' Party was de facto equivalent to Poland's head of state. Throughout its existence, the PZPR maintained close ties with ideologically-similar parties of the Eastern Bloc, most notably the Socialist Unity Party of Germany, Communist Party of Czechoslovakia and the Communist Party of the Soviet Union. Between 1948 and 1954, nearly 1.5 million individuals registered as Polish United Workers' Party members, and membership rose to 3 million by 1980.

The general secretary of the Central Committee of the Chinese Communist Party (Chinese: 中国共产党中央委员会总书记; pinyin: Zhōngguó Gòngchǎndǎng Zhōngyāng Wěiyuánhuì Zǒngshūjì) is the leader of the Chinese Communist Party (CCP), the sole ruling party of the People's Republic of China (PRC). The general secretary leads the CCP Central Committee. Since 1989, the CCP general secretary has been the paramount leader of the PRC.

The position of the general secretary of the Central Committee was established at the 4th Party National Congress in 1925, when Chen Duxiu, one of the founders of the CCP, was elected as the first General Secretary. After the 7th National Congress, the position was replaced by the Chairman of the Central Committee, which was held by Mao Zedong until his death in 1976. The post was re-established at the 12th National Congress in 1982 and replaced the Party Chairman as the highest leadership position of the CCP; Hu Yaobang was the first General Secretary. Since Jiang Zemin's leadership in the 1990s, the holder of the post has been, except for transitional periods, the president of China, making the holder the state representative, and the chairman of the Central Military Commission (CMC), the supreme commander of the People's Liberation Army (PLA).

A directorial system is a political system governed by a college of several people who jointly exercise the powers of a head of state and/or a head of government.