Alliance of the Democratic Left

The Alliance of the Democratic Left (Polish: Sojusz Lewicy Demokratycznej, SLD) is the main left-wing political party in Poland. founded on April 15, 1999 and currently constitutes the third political force in the Sejm, the lower house of the National Assembly of the Republic.

Most of its members had been members of the SdRP (Socjaldemokracja Rzeczypospolitej Polskiej, the Social Democratic Party of Poland). The SdRP and other socialist and social democratic parties formed a left-wing coalition called Sojusz Lewicy Demokratycznej (1991-1999). In 1999 the coalition became a party, but lost some members. The coalition was established by former members of the Polish United Labor Party (POUP), which ruled Poland before 1989. The POUP was a communist party, but today the SLD is a social democratic pro-European Union party. A coalition between SLD and PSL has governed Poland between 1993 and 1997 and between 2001 and 2003.

Election results

Date	Candidate	Votes	%	Sejm seats	+/-	seats in Senat	+/-	Status
2001	Leszek Miller	5.342.519	41.05 %	216/460	52	75/100	47	Coalition
2005	Wojciech Olejniczak	1.335.257	11.31 %	55/460	161	0/100	75	Opposition
2007	Aleksander Kwaśniewski	2.122.981	13.15 %	53/460	2	0/100		Opposition
2011	Grzegorz Napieralski	1.184.303	8.24 %	27/460	26	0/100		Opposition
2015a	Barbara Nowacka	1.147.102	7.55%	0/460	26	0/100		Extraparliamentary
2019b	Włodzimierz Czarzasty	2.319.946	12.56 %	49/460	49	2/100	2	Opposition

^a Within the United Left coalition. ^b Within the coalition La Izquierda.