Social Democratic Party of Lithuania

Social Democratic Party of Lithuania Lietuvos socialdemokratų partija
Abbreviation	LSDP
Chairperson	Vilija Blinkevičiūtė
First Deputy Chair	Gintautas Paluckas
Deputy Chairs	See list Algimantė Ambrulaitytė Tadas Barauskas Rasa Budbergytė Nerijus Cesiulis Nijolė Dirginčienė Robertas Duchnevičius Rita Grigalienė Liutauras Gudžinskas Orinta Leiputė Saulius Margis Juozas Olekas Raminta Popovienė Darius Razmislevičius Dovilė Šakalienė Jūratė Zailskienė
Executive Secretary	Justas Pankauskas
Founded	1 May 1896; 128 years ago (1896-05-01)
Headquarters	B. Radvilaitės g. 1, Vilnius
Youth wing	Lietuvos socialdemokratinio jaunimo sąjunga (LSDJS)
Membership (2022)	15,205[1]
Ideology	Social democracy Pro-Europeanism
Political position	Centre-left
European affiliation	Party of European Socialists
European Parliament group	Progressive Alliance of Socialists and Democrats
International affiliation	Progressive Alliance Socialist International
Colours	Red
Seimas	52 / 141
European Parliament	2 / 11
Municipal councils	358 / 1,498
Mayors	17 / 60
Website
lsdp.lt
Politics of Lithuania Political parties Elections

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The Social Democratic Party of Lithuania (Lithuanian: Lietuvos socialdemokratų partija, abbr. LSDP) is a centre-left^[2] and social democratic^[3] political party in Lithuania.^[4] Founded as an underground Marxist organisation in 1896, it is the oldest extant party in Lithuania. During the time of the Soviet Union, the party went into exile, emerging once again after the end of communist rule in 1989.

The party led a government in the unicameral Seimas, Lithuania's parliament from 2001 to 2008 and from 2012 to 2016. It has been the ruling party of Lithuania since 2024. The party is a member of the Party of European Socialists (PES), Progressive Alliance,^[5] and Socialist International.^[6]