Social Democratic Party (Estonia)
| Social Democratic Party Sotsiaaldemokraatlik Erakond | |
|---|---|
| Leader | Lauri Läänemets | 
| Founder | Marju Lauristin | 
| Founded | 8 September 1990 | 
| 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 | Socialist International (1990–2017) | 
| Colours | Red | 
| Riigikogu | 9 / 101 | 
| Municipalities | 48 / 1,717 | 
| European Parliament | 2 / 7 | 
| Party flag | |
| Website | |
| sotsid.ee | |
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.