1947 Polish legislative election in the context of "History of Poland (1945–1989)"

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 history of Poland from 1945 to 1989 spans the period of Marxist–Leninist regime in Poland after the end of World War II. These years, while featuring general industrialization, urbanization and many improvements in the standard of living, were marred by early Stalinist repressions, social unrest, political strife and severe economic difficulties.Near the end of World War II, the advancing Soviet Red Army, along with the Polish Armed Forces in the East, pushed out the Nazi German forces from occupied Poland. In February 1945, the Yalta Conference sanctioned the formation of a provisional government of Poland from a compromise coalition, until postwar elections. Joseph Stalin, the leader of the Soviet Union, manipulated the implementation of that ruling. A practically communist-controlled Provisional Government of National Unity was formed in Warsaw by ignoring the Polish government-in-exile based in London since 1940.

During the subsequent Potsdam Conference in July–August 1945, the three major Allies ratified a massive westerly shift of Poland's borders and approved its new territory between the Oder–Neisse line and the Curzon Line. The area of Poland was reduced in comparison to its pre-World War II extent and geographically resembled that of the medieval early Piast dynasty era. Following the destruction of the Polish-Jewish population in the Holocaust, the flight and expulsion of Germans in the west, resettlement of Ukrainians in the east, and the expulsion and resettlement of Poles from the Eastern Borderlands (Kresy), Poland became for the first time in its history an ethnically homogeneous nation-state without prominent minorities. The new government solidified its political power, while the Polish United Workers' Party (PZPR) under Bolesław Bierut gained firm control over the country, which would remain an independent state within the Soviet sphere of influence. The July Constitution was promulgated on 22 July 1952 and the country officially became the Polish People's Republic (PRL).

Front of National Unity or National Unity Front (Polish: Front Jedności Narodu, FJN) was a popular front supervising elections in the Polish People's Republic which also acted as a coalition for the dominant communist Polish United Workers' Party (PZPR) and its allies. It was founded in 1952 as National Front (Front Narodowy) and renamed to Front of National Unity in 1956. It was the heir of the Democratic Bloc (Blok Demokratyczny) which ran in the elections of 1947 before the merger between communists and socialists.

The Front was created by and was subordinate to the PZPR. Its membership included all three legal Polish political parties (the PZPR, Democratic Party, and United People's Party) and many organizations (such as trade unions). During elections it had a near monopoly (varied depending on particular time) on registering candidates who had the right to participate in the elections. As was the case with other popular fronts in the Soviet bloc, the member parties of the Front were largely subservient to the PZPR; they had to accept the PZPR's "leading role" as a condition of their existence.

The Polish People's Party (Polish Peasant Party, Polskie Stronnictwo Ludowe – PSL) existed in post-World War II Poland from 1945 to 1949. In a period of increasing solidification of communist power in Poland but with the political system retaining some formal adherence to multiparty democracy principles, the PSL was a broadly left-wing non-communist party that was not allied with the communists. The PSL was defeated by the communist-based bloc in the rigged legislative elections of 1947.