Social Democratic Party

Also known as SDE, Social Democratic Party of Estonia

political party in Estonia

Key facts

Abbreviation: SDE
Leader: Lauri Läänemets
Founder: Marju Lauristin
Founded: 8 September 1990 ; 35 years ago ( 1990-09-08 )
Headquarters: Toompuiestee 16, Tallinn 10137
Youth wing: Young Social Democrats
Membership 2021: 5,337
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 (1990–2017)

Article

The Social Democratic Party (Estonian: Sotsiaaldemokraatlik Erakond, SDE) is a centre-left political party in Estonia. It is currently led by Lauri Läänemets. The party was formerly known as the Moderate People's Party (Estonian: Rahvaerakond Mõõdukad). The SDE has been a member of the Party of European Socialists since 16 May 2003 and was a member of the Socialist International from November 1990 to 2017. It is orientated towards the principles of social-democracy, and it supports Estonia's membership in the European Union. From April 2023 until March 2025, the party was a junior coalition partner in the third Kallas government and the Michal government.

History