List of political parties in Poland in the context of "Polish United Workers' Party"

The Polish Socialist Party (Polish: Polska Partia Socjalistyczna, PPS) is a democratic socialist political party in Poland.

It was one of the most significant parties in Poland from its founding in 1892 until its forced merger with the communist Polish Workers' Party to form the Polish United Workers' Party in 1948. Józef Piłsudski, founder of the Second Polish Republic, was a member of and later led the PPS in the early 20th century.

Law and Justice (Polish: Prawo i Sprawiedliwość [ˈpravɔ i ˌspravjɛˈdlivɔɕt͡ɕ] , PiS) is a right-wing populist and national-conservative political party in Poland. The party is a member of European Conservatives and Reformists Group. Its chairman has been Jarosław Kaczyński since 18 January 2003.

It was founded in 2001 by Jarosław and Lech Kaczyński as a direct successor of the Centre Agreement after it split from the Solidarity Electoral Action (AWS). Despite a poor showing in the 2001 parliamentary election, where it came 4th, it would later win the 2005 presidential and parliamentary elections. Following this victory, PiS formed the Marcinkiewicz and Kaczyński governments. For a brief period, the governments included coalition ministers from the League of Polish Families and Self-Defence before collapsing in 2007. In the 2007 snap election, the rival Civic Platform (PO) emerged victorious and formed a coalition with the Polish People's Party. The coalition served two terms, retaining a majority in the 2011 parliamentary election. Law and Justice also lost the presidency following the death of president Lech Kaczński and many government officials in the Smolensk air disaster — acting president Bronisław Komorowski of PO would be officially elected to the presidency in 2010, winning against Jarosław Kaczyński in the second round. Law and Justice concluded its period in the opposition in 2015, where it won an upset victory in the 2015 presidential election and an outright majority of seats in the 2015 parliamentary election, retaining its majority in 2019 and the presidency in 2020. It governed the country for 8 years, forming the Szydło and Morawiecki cabinets, until losing its parliamentary majority in 2023 and returning to an opposition despite winning the largest amount of seats. The party's candidate, Karol Nawrocki, scored another upset victory in the 2025 presidential election.

The Centre Agreement (Polish: Porozumienie Centrum, PC) was a Christian-democratic political party in Poland. It was established in 1990 and had its roots in the Solidarity trade union and its political arm, the Solidarity Citizens' Committee. Its main leader was Jarosław Kaczyński. The party was initially the party of choice of Polish president Lech Wałęsa and heavily cooperated with him and his environment between 1990 and 1992, leading the first post-communist governments. In 1991, Jan Olszewski from Centre Agreement gained the support of Wałęsa for his candidacy for Prime Minister, forming a PC-led government. However, the government was mired with internal conflicts in 1992 and fell to a vote of no confidence. Afterwards, the party was increasingly marginalized and became a part of Solidarity Electoral Action in 1997. In 1999, the bigger faction of the party left to the newly created Polish Christian Democratic Agreement; further, in 2001, the leadership of the party dissolved Centre Agreement to found Law and Justice, the direct successor of the party. However, it wouldn't be until a year later that it would dissolve.

In its programme, the PC opposed socialism and was strongly anti-communist. It was a centrist party that declared its commitment to the principles of Christian democracy but distanced itself from Catholic nationalism. On cultural issues, the Centre Agreement adhered to Catholic principles, although it stressed that while it supports expanding the role of the Catholic Church in the Polish state, Poland must also accommodate non-believers. The party stood out through its economic program as it supported social market economy and was unique in the post-Solidarity front in its negative approach towards the neoliberal Balcerowicz Plan. The PC argued that market economy created 'distortions' which citizens should be protected from, and stated that the main goal of Polish economy should be "preventing the impoverishment of families in need". The party was critical of privatization, seeing it as a reform that made few people rich at the expense of the general population. Through this, the Centre Agreement represented voters who were anti-communist but nevertheless critical of liberal capitalism.

The League of Polish Families (Polish: Liga Polskich Rodzin, pronounced [ˈli.ɡa ˈpɔl.skix ˈrɔ.d͡ʑin], LPR) is a social conservative political party in Poland, with many far-right elements in the past. The party's original ideology was that of the National Democracy movement which was headed by Roman Dmowski, however, in 2006 its leader Roman Giertych distanced himself from that heritage.

It was represented in the Polish parliament, forming part of the cabinet of Jarosław Kaczyński until the latter dissolved in September 2007. In the 2007 parliamentary election, it failed to gain the 5% threshold required to enter the Sejm and lost all its seats, even failing to cross the 3% threshold for eligibility to receive government funding. Since then, the party has become a minor political force, but continues to exist.

The Self-Defence of the Republic of Poland (Polish: Samoobrona Rzeczpospolitej Polskiej, SRP) is a Christian socialist, populist, agrarian, and nationalist political party and trade union in Poland. The party promotes agrarian socialist and Catholic socialist economic policies combined with a left-wing populist, anti-globalization and anti-neoliberal rhetoric. The party describes itself as left-wing, although it stresses that it belongs to the "patriotic left" and follows Catholic social teaching. The party is sympathetic to Communist Poland, which led political scientists to label the party as neocommunist, post-communist, and far-left.

Though considered a "political chameleon", Self-Defence of the Republic of Poland is generally regarded as a left-wing party by historians and political scientists. According to Andrzej Antoszewski, Self-Defence was a radical left-wing party that by postulating the need to stop privatisation and protect workers' interests, often overlapped with neo-communist parties. In English-language literature, the party is described as a radical left-populist party. In the wake of the SLD's electoral defeat in 2005, Self-Defence was sometimes referred to as the "new left". It was also called a left-wing party with a populist-agrarian face. Political scientists also described it as socialist, allowing it to form alliances with the Democratic Left Alliance. On the other hand, its anti-neoliberal and nationalist narrative also allowed it to briefly cooperate with PiS and LPR in 2005.