In the second half of 1991, parties for pensioners began to emerge independently in Poland. By the end of 1993 there were 7 large entities. On 20 November 1993 the four largest - the Polish Pensioners' and Annuitants' Party in Bydgoszcz, the Polish Pensioners' and Annuitants' Protection Party in Łódź, the Polish Pensioners' and Annuitants' Party "Jedność" in Konin and the Pensioners' and Annuitants' Party in Koszalin - concluded an agreement on their unification. The unification congress took place on 4–5 June 1994 in
Przysiek. In the
1995 Polish presidential election, the party supported
Tadeusz Zieliński (ombudsman,
Union of Labour candidate). at the end of this term a councillor of the
Pomeranian Voivodeship Sejmik elected from the
Self-Defence of the Republic of Poland list became affiliated with the party. In the
2007 Polish parliamentary election, KPEiR established its own electoral committee, but withdrew from the elections and did not give official support to other parties. In the
2009 European Parliament election in Poland, KPEiR candidates ran on the lists of the SLD-UP coalition, but did not win any of the 7 MEP seats that went to the committee. In the
2010 Polish local elections, the party fielded lists to the Sejmiks in 13 provinces, receiving a total of 1.82% of the vote, which was the fifth highest result nationally. The party did not reach the electoral threshold in any province, with the best result in the provinces of Pomorskie (4.14%), Lubuskie (3.96%) and Łódzkie (3.05%). The NAPE also won fifth seats in municipal councils and 1 in city councils. On 22 March 2011, the party signed an agreement to run jointly in the
2011 Polish parliamentary election with the
Party of Regions and the Democratic Association (the
Pawel Piskorski part of the
Democratic Party opposing the leadership). In the end, however, a joint run-off did not take place, and the KPEiR reached an agreement with the Democratic Left Alliance. Many KPEiR members, including the party's general secretary Tadeusz Staniewski and former construction minister
Andrzej Aumiller, found themselves on the party's lists. One of the vice-presidents of the KPEiR, Sławomir Słomka, in turn became a candidate of the
Polska Jest Najważniejsza party. Unofficially, some KPEiR activists were also on the lists of the
Polska Partia Pracy - Sierpień 80. No KPEiR member won a seat in the Sejm. On 19 April 2012, party leader
Tomasz Mamiński resigned from his position and his duties were taken over by Tadeusz Staniewski. There were also other changes in the party's top leadership. Among other things,
Andrzej Pstrokoński became the general secretary of the KPEiR. On 31 May, Tadeusz Staniewski was replaced as acting chairman by
Wojciech Kornowski, and elections for the new authorities were scheduled for 20 September. Tadeusz Staniewski again became party leader, and Wojciech Kornowski, together with a group of activists (including
Andrzej Aumiller and former KPEiR deputy chairman Andrzej Kiselka), founded the Pensioners' Party of the Republic of Poland (formally existing until 2017). The KPEiR established close cooperation with the Democratic Left Alliance in November. In 2014, the KPEiR signed an agreement to work closely with the Alliance of the Democratic Left, but its activists were not on the electoral lists for the European Parliament. On 7 May,
Tomasz Mamiński was re-elected as head of the KPEiR. In the
2014 Polish local elections KPEiR was, together with the Democratic Left Alliance and the Union of Labour, a member of the
SLD Lewica Razem coalition, for which it fielded candidates for councillors at various levels. In the
2015 Polish parliamentary election, several KPEiR activists ran for the Sejm from the
United Left lists, which did not win seats. In June 2018, the KPEiR was among the organisations reactivating the
SLD Lewica Razem coalition, although it had previously (in May) joined the
Civic Coalition in Podkarpacie. In September, the party tied up with the KO at the national level, declaring to run from its lists (which did not happen). In the
2019 European Parliament election in Poland, the party did not run. In
2019 Polish parliamentary election, the party registered its own election committee, but also did not participate. In the
2020 Polish presidential election KPEiR supported
Waldemar Witkowski, chairman of the
UP. ==Ideology==