Home›1878 establishments in Austria-Hungary›捷克社會民主黨🌐中文EnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ341148· pop 36· linked from 957 articles捷克社會民主黨Also known as ČSSD, Czech Social Democratic Partycentre-left Czech political partyKey factsAbbreviationSOCDEMLeaderJiří NedvědDeputy leadersRadek Scherfer , Michal Chalupný , Alžběta Kálalová , Jiří OttFoundersJosef Boleslav Pecka , Ladislav ZápotockýFounded7 April 1878 ; 148 years ago ( 1878-04-07 )HeadquartersLidový dům, Hybernská 1033/7, Prague 1Think tankMasaryk Democratic AcademyYouth wingYoung Social DemocratsWomen s wingSocial Democratic WomenReligious wingChristian Social PlatformMembership 20253,090IdeologySocial democracy , Left-wing populismAvailable in 35 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةConnectionsProgressive Alliance of Socialists and DemocratsEntityANO 2011EntityCategories1878 establishments in Austria-HungaryCzech Social Democratic PartyPolitical parties established in 1878Social democratic parties in the Czech Republic