Social Democratic Party of Finland facts for kids
Quick facts for kids
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Abbreviation | SDP SD |
Chairperson | Antti Lindtman |
Secretary | Mikkel Näkkäläjärvi |
General Secretary | Kari Anttila |
Parliamentary group leader | Tytti Tuppurainen |
First deputy chair | Nasima Razmyar |
Founded | 20 July 1899 |
Headquarters | Siltasaarenkatu 18–20C, 00530 Helsinki |
Newspaper | Demokraatti |
Think tank | Kalevi Sorsa Foundation |
Student wing | Social Democratic Students |
Youth wing | Social Democratic Youth |
Women's wing | Social Democratic Women in Finland |
Children’s wing | Nuoret Kotkat |
Swedish-speaking wing | Finlands Svenska Socialdemokrater |
Membership (2021) | ![]() |
Ideology | Social democracy |
Political position | Centre-left |
European affiliation | Party of European Socialists |
International affiliation | Progressive Alliance Socialist International |
European Parliament group | Progressive Alliance of Socialists and Democrats |
Nordic affiliation | SAMAK The Social Democratic Group |
Colours | Red |
Anthem | Työväen marssi |
Eduskunta |
43 / 200
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European Parliament |
2 / 15
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Municipalities |
1,451 / 8,859
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County seats |
277 / 1,379
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The Social Democratic Party of Finland (SDP) is a major political party in Finland. It is known for its focus on social fairness and being supportive of the European Union. The SDP is currently the third largest party in the Parliament of Finland, holding 43 seats.
The party was started in 1899 as the Workers' Party of Finland. This makes it the oldest active political party in Finland. It works closely with Finnish trade unions, which are groups that protect workers' rights. The SDP is also part of larger European and international political groups.
In 2019, Sanna Marin became Finland's Prime Minister. She led a government made up of several parties, including the SDP. In 2023, Antti Lindtman was chosen as the new leader of the party.
Contents
A Look Back: The SDP's History
The party began as the Workers' Party of Finland in 1899. Their first meeting was held in Turku. Early on, the party pushed for important changes. These included better rights for workers, freedom of speech, and an 8-hour workday. They also wanted to help tenant farmers.
In 1903, the party changed its name to the Social Democratic Party of Finland. They also created the "Forssa Programme." This plan called for an 8-hour workday, a minimum wage, and required education for everyone. This program guided the party's goals for many years.
The SDP became very popular after Finland introduced universal voting rights in 1906. In the 1916 election, the party won a majority of seats in parliament. This was the only time in Finland's history that one party held a majority. However, they lost this majority in the next election.
Finland faced a difficult time with the Finnish Civil War in 1918. Many SDP leaders were killed or imprisoned. After the war, Väinö Tanner helped rebuild the party. He worked to make the SDP a respected governing party again.
During World War II, the SDP played a key role in uniting the country. They worked with other parties to protect Finland from threats. After the war, the SDP focused on defending Finland's independence and democracy.
In the 1995 election, the SDP won a big victory. Their leader, Paavo Lipponen, served as Prime Minister for two terms. During this time, the party strongly supported Finland joining the European Union in 1995.
In the 2011 election, the SDP had its lowest result ever, winning 42 seats. However, they still became the second-largest party. They then joined a six-party government.
In 2019, the SDP became the largest party in parliament again. Antti Rinne became Prime Minister. But he resigned later that year. Sanna Marin then took over as Prime Minister in December 2019. She was the youngest Prime Minister in Finland's history. After the 2023 election, Antti Lindtman became the new party leader.
What the SDP Believes In
The SDP is a social-democratic party, which means it is on the centre-left of politics.
The party's main ideas and goals include:
- Sustainable Development: Protecting the environment for the future.
- Equality: Making sure everyone has fair chances.
- Peace and Cooperation: Working together for a better world.
- Freedom and Solidarity: Supporting individual freedoms and helping each other.
- Clean Environment: Protecting nature.
- Democratic Socialism: Believing in democracy and social fairness.
The SDP also supports the values of humanism and the achievements of the Nordic model. The Nordic model is a way of organizing society that focuses on strong public services and social welfare.
In the early 1900s, the party was very focused on workers' rights and social issues. For a long time, it was one of the most powerful socialist parties in Europe.
Before 2022, the party did not want Finland to join NATO. They preferred to stay neutral. However, after the 2022 events in Ukraine, the party changed its mind and supported joining NATO.
The SDP supports many modern issues, such as:
- LGBT Rights: Supporting equal rights for all people.
- Nuclear Power: Building nuclear power plants for energy.
- Swedish Language: Keeping Swedish as one of Finland's official languages.
- Public Schools: Increasing funding for public schools and universities.
- Coal-Free Finland: Working to stop using coal for energy by 2030.
The party also wants to increase work-based immigration to Finland. This is to help with the country's labor shortage and low birth rate. The SDP works closely with trade unions to protect workers' benefits. They also support keeping the church and state separate.
Who Votes for the SDP?
The average age of someone who is a member of the SDP is about 61.5 years old. More than half of all people who vote for the SDP are actively working.
Symbols and Posters
Important Social Democrats
Many important people in Finnish politics have been members of the SDP. Here are a few:
Väinö Tanner | Served as Prime Minister and Foreign Minister. |
Karl-August Fagerholm | Served as Prime Minister multiple times and Speaker of Parliament. |
Kalevi Sorsa | Served as Prime Minister for several terms. |
Mauno Koivisto | Served as Prime Minister and later as President of Finland. He won the Nobel Peace Prize. |
Martti Ahtisaari | Served as President of Finland and won the Nobel Peace Prize. |
Paavo Lipponen | Served as Prime Minister from 1995 to 2003. |
Tarja Halonen | Served as Foreign Minister and later as President of Finland. |
Jutta Urpilainen | Served as Finance Minister and Deputy Prime Minister. |
Antti Rinne | Served as Prime Minister in 2019. |
Sanna Marin | Served as Prime Minister from 2019 to 2023. |
Leaders of the Social Democrats

The SDP has had many leaders throughout its history. Here are some of them:
Time | Leader |
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1899–1900 | Nils Robert af Ursin |
1917–1918 | Kullervo Manner |
1918–1926 | Väinö Tanner |
1946–1957 | Emil Skog |
1963–1975 | Rafael Paasio |
1975–1987 | Kalevi Sorsa |
1993–2005 | Paavo Lipponen |
2008–2014 | Jutta Urpilainen |
2014–2020 | Antti Rinne |
2020–2023 | Sanna Marin |
2023–present | Antti Lindtman |
How the SDP Has Done in Elections
The SDP has participated in many elections in Finland. Their support has changed over the years.
Parliament of Finland Elections
The chart below shows the percentage of votes the SDP has received in parliamentary elections over time.

Here are the results from the most recent parliamentary elections:
Parliament of Finland | |||||||||
Election | Popular vote | Number of seats | Status | ||||||
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Votes | % | ± pp | Rank | Seats | +/– | Rank | |||
2011 | 561,558 | 19.10 | ![]() |
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42 / 200
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Coalition | |
2015 | 490,102 | 16.51 | ![]() |
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34 / 200
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Opposition | |
2019 | 546,471 | 17.73 | ![]() |
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40 / 200
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Coalition | |
2023 | 616,218 | 19.93 | ![]() |
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43 / 200
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Opposition |
European Parliament Elections
The SDP also takes part in elections for the European Parliament.
Parliament of Finland | |||||||||
Year | Popular vote | Number of seats | |||||||
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Votes | % | ± pp | Rank | Seats | +/– | Rank | |||
2014 | 212,211 | 12.31% | ![]() |
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2019 | 267,342 | 14.62% | ![]() |
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2024 | 272,034 | 14.87% | ![]() |
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Presidential Elections
The SDP has had candidates in presidential elections, both indirect (where electors vote) and direct (where people vote directly).
Direct Presidential Elections
Here are the results for direct presidential elections:
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Year | Candidate | 1st round | 2nd round | Results | ||||||
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Votes | % | ± pp | Rank | Votes | % | ± pp | Rank | |||
1994 | Martti Ahtisaari | 828,038 | 25.91 | ![]() |
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1,723,485 | 53.85 | ![]() |
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Won |
2000 | Tarja Halonen | 1,224,431 | 40.03 | ![]() |
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1,644,532 | 51.63 | ![]() |
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Won |
2006 | Tarja Halonen | 1,397,030 | 46.31 | ![]() |
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1,630,980 | 51.79 | ![]() |
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Won |
2012 | Paavo Lipponen | 205,020 | 6.70 | ![]() |
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Lost | ||||
2018 | Tuula Haatainen | 97,294 | 3.25 | ![]() |
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Lost | ||||
2024 | Jutta Urpilainen | 140,802 | 4.34 | ![]() |
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Lost |