This is a list of social democratic and democratic socialist parties which have governed countries, whether as the ruling party or as a member of a governing coalition. Most of these parties were members of the Socialist International.
Political parties
| Country | Party | Years in power | Member of SI | Notes |
|---|---|---|---|---|
| Afghanistan | Homeland Party | 1990–1992 | ||
| Albania | Socialist Party of Albania | 2013–present | ||
| Australia | Australian Labor Party | 1904, 1908–1909, 1910–1913, 1914–1917, 1929–1932, 1941–1949, 1972–1975, 1983–1996, 2007–2013, 2022–present | yes (formerly) | |
| Bangladesh | Bangladesh Awami League | 2009–present | ||
| Barbados | Barbados Labour Party | 1954–1961, 1976–1986, 1994–2008, 2018–present | ||
| Democratic Labour Party | 1961–1976, 1986–1994, 2008–2018 | |||
| Belgium | Belgian Socialist Party | 1938–1939, 1945–1949, 1954–1958, 1973–1974 | ||
| Parti socialiste | 2011–2014 | |||
| Bermuda | Progressive Labour Party | 1998–2012 | ||
| Bolivia | Movement Towards Socialism | 2006–present | ||
| Chile | Socialist Party of Chile | 1970–1973, 2006–2010, 2014–2018 | yes | |
| Brazil | Brazilian Socialist Party | 2002–2014, 2023–present | ||
| Socialism and Liberty Party | 2023–present | |||
| Workers' Party | 2003–2016, 2023–present | |||
| Bulgaria | Bulgarian Socialist Party | 2002-2012 | ||
| Costa Rica | National Liberation Party | 1948-1949, 1953-1958, 1962-1966, 1970-1978, 1982-1990, 1994-1998, 2006-2014 | ||
| Denmark | Social Democrats (Denmark) | 1916–1920, 1924–1926, 1929–1945, 1947–1950, 1953–1968, 1971–1973, 1975–1982, 1993–2001, 2011–2015, 2019– | ||
| Dominica | Dominica Labour Party | 1961–1979, 2000–present | ||
| Dominican Republic | Dominican Revolutionary Party | 1963, 1978–1986, 2000–2004 | ||
| Ecuador | Democratic Left | 1988–1992 | ||
| PAIS Alliance | 2007–2021 | |||
| El Salvador | Farabundo Martí National Liberation Front | 2009–2019 | ||
| Fiji | Fiji Labour Party | 1987, 1999–2000 | ||
| Finland | Social Democratic Party of Finland | 1926–1927, 1937–1959, 1966–1991, 1995–2007, 2011–2015, 2019–2023 | yes | |
| France | French Section of the Workers' International | |||
| Socialist Party | 1981–1995, 1997–2002, 2012–2017 | yes | ||
| Gibraltar | Gibraltar Socialist Labour Party | |||
| Germany | Social Democratic Party of Germany | 1918–1920, 1921–1922, 1923, 1928–1930, 1966–1982, 1998–2009, 2013–present | ||
| Greece | Panhellenic Socialist Movement | 1981–1989, 1993–2004, 2009–2012 | ||
| Syriza | 2015–2019 | |||
| Greenland | Siumut | |||
| Guyana | People's National Congress (Guyana) | 2015–present | ||
| Hungary | Hungarian Socialist Party | 1994–1998, 2002–2010 | yes | |
| Social Democratic Party of Hungary | 1918–1919 | |||
| Iceland | Social Democratic Alliance | 2009–2013 | yes | |
| India | Indian National Congress | 1947–1977, 1980–1989, 1991–1996, 2004–2014 | yes | |
| Ireland | Sinn Féin | 1919–22 | ||
| Israel | Israeli Labor Party | 1968–1977, 1984–1990, 1992–1996, 1999–2003, 2006–2011, 2020–2022 | yes (formerly) | |
| Italy | Italian Socialist Party | |||
| Jamaica | People's National Party | 1955–1962, 1972–1980, 1989–2007, 2012–2016 | ||
| Japan | Japan Socialist Party | 1947–1948 | yes | |
| Malta | Labour Party | |||
| Mauritius | Labour Party | |||
| Mauritian Militant Movement | ||||
| Militant Socialist Movement | ||||
| Mongolia | Mongolian People's Revolutionary Party | |||
| Montenegro | Democratic Party of Socialists of Montenegro | |||
| Morocco | Socialist Union of Popular Forces | |||
| Nepal | Nepali Congress | |||
| Netherlands | Labour | 1946, 1948–1958, 1973–1977, 1994–2002 | ||
| New Zealand | Labour Party | 1935–1949, 1957–1960, 1972–1975, 1984–1990, 1999–2008, 2017–2023 | observer | |
| Niger | Nigerien Party for Democracy and Socialism | |||
| Norway | Labour Party | 1928, 1935–1965, 1971–1972, 1973–1981, 1986–1989, 1990–1997, 2000–2001, 2005–2013, 2021–present | observer | |
| Pakistan | Pakistan People's Party | |||
| Poland | Polish Socialist Party | |||
| Democratic Left Alliance | 1993–1997, 2001–2005 | |||
| New Left | 2024-present | |||
| Portugal | Socialist Party | 1976–1978, 1983–1985, 1995–2002, 2005–2011, 2015–2024 | yes | |
| Saint Kitts and Nevis | Saint Kitts and Nevis Labour Party | 1960–1980, 1995–2015, 2022-present | ||
| Saint Lucia | Saint Lucia Labour Party | 1960–1964, 1979–1982, 1997–2006, 2011–2016, 2021–present | ||
| Saint Vincent and the Grenadines | Saint Vincent Labour Party | 1967–1972, 1974–1984 | ||
| Unity Labour Party | 2001–2025 | |||
| Serbia | Democratic Party | 2000–2003, 2008–2012 | yes | |
| Slovakia | Smer | 2006–2010, 2012–2020, 2023-present | yes | |
| South Africa | African National Congress | 1994–present | yes | |
| Spain | Spanish Socialist Workers' Party | 1931–1933, 1936–1939, 1982–1996, 2004–2011, 2018–present | yes | |
| Sri Lanka | Sri Lanka Freedom Party | 1956–1960, 1960–1965, 1970–1977, 1994–2022 | no | |
| Janatha Vimukthi Peramuna | 2004–2005, 2024–present | no | ||
| Sweden | Swedish Social Democratic Party | 1917–1920, 1921–1923, 1924–1926, 1932–1976, 1982–1991, 1994–2006, 2014–2022 | ||
| Tanzania | Tanganyika African National Union | 1962–1977 | ||
| Chama Cha Mapinduzi | 1977–present | yes | ||
| Trinidad and Tobago | United National Congress | 1995–2001, 2010–2015, 2025-present | ||
| Turkey | Republican People's Party | 1923–1950, 1961–1965, 1971–73, 1974, 1977, 1978–1979, 1995–1996 | ||
| Social Democratic People's Party | 1991–1995 | |||
| Democratic Left Party | 1997–2002 | |||
| Peoples' Democratic Party | 2015 | |||
| United Kingdom | Labour Party | 1915–1922, 1924, 1929–1951, 1964–1970, 1974–1979, 1997–2010, 2024–present | observer | |
| Uruguay | Socialist Party of Uruguay | 2005–present | yes | |
| Venezuela | Democratic Action | 1945–1948, 1959–1969, 1974–1979, 1984–1993 |
Currently represented
The following is a list of democratic socialist or partially democratic socialist parties which are currently being represented in the legislature of their country. It does not include democratic socialist parties that are mainly social democratic and are considered to their right within the centre-left.
- indicates a governing party, including as junior coalition partner or providing parliamentary support
| Party | Country | Date established | % of popular vote in the latest election | Seats in the legislature (lower chamber if bicameral) |
|---|---|---|---|---|
| Movement for Socialism | Bolivia | 1998 | 55.10% (2020) | 75 / 130 (58%) |
| Broad Front1 | Uruguay | 1971 | 40.49% (2019) | 42 / 99 (42%) |
| Party of Socialists of the Republic of Moldova | Moldova | 1997 | 27.17% (2021) | 32 / 101 (32%) |
| National Unity of Hope1 | Guatemala | 2002 | 17.92% (2019) | 54 / 160 (34%) |
| Labour Party1 | United Kingdom | 1900 | 33.70% (2024) | 404 / 650 (62%) |
| Scottish National Party1 | Scotland | 1936 | 47.7% (2021) | 64 / 129 (50%) |
| Plaid Cymru1 | Wales | 1925 | 20.70% (2021) | 13 / 60 (22%) |
| Social Democratic and Labour Party1 | Northern Ireland | 1970 | 9.1% (2022) | 8 / 90 (9%) |
| Sinn Féin | Northern Ireland | 1905 | 29% (2022) | 27 / 90 (30%) |
| Ireland | 1905 | 24.53% (2020) | 37 / 158 (23%) | |
| Syriza1 | Greece | 2004 | 17.83% (2023) | 47 / 300 (16%) |
| Farabundo Martí National Liberation Front | El Salvador | 1980 | 6.91% (2021) | 4 / 84 (5%) |
| Inuit Ataqatigiit | Greenland | 1976 | 37.44% (2021) | 12 / 31 (39%) |
| Left-Green Movement | Iceland | 1999 | 12.57% (2021) | 6 / 63 (10%) |
| Democratic Socialist Left | San Marino | 2017 | 16.49% (2019) | 10 / 60 (17%) |
| Party of Socialists and Democrats1 | San Marino | 2005 | 13.13% (2019) | 8 / 60 (13%) |
| Guasú Front | Paraguay | 2010 | 11.83% (2018) | 6 / 45 (13%) |
| Peoples' Democratic Party(Entered the 2023 elections from the Peoples' Equality and Democracy Party lists) | Turkey | 2012 | 8.82% (2023) | 57 / 600 (10%) |
| Workers' Party1 | Brazil | 1980 | 10.30% (2018) | 56 / 513 (11%) |
| Unidas Podemos | Spain | 2016 | 12.86% (2019) | 35 / 350 (10%) |
| The Left | Slovenia | 2014 | 4.46% (2022) | 5 / 90 (6%) |
| The Left | Germany | 2007 | 4.9% (2021) | 39 / 709 (6%) |
| Socialist Party1 | Netherlands | 1971 | 6% (2021) | 9 / 150 (6%) |
| Socialist Party of Serbia1 | Serbia | 1990 | 11.79 (2022) | 23 / 250 (9%) |
| Left Alliance | Finland | 1990 | 8.17% (2019) | 16 / 200 (8%) |
| Left Party | Sweden | 1917 | 8.02% (2018) | 28 / 349 (8%) |
| Socialist People's Party | Denmark | 1959 | 7.71% (2019) | 14 / 179 (8%) |
| New Democratic Party1 | Canada | 1961 | 15.98% (2019) | 24 / 338 (7%) |
| Red–Green Alliance | Denmark | 1989 | 6.93% (2019) | 13 / 179 (7%) |
| A Just Russia1 | Russia | 2006 | 6.34% (2016) | 16 / 225 (7%) |
| Broad Front | Peru | 2013 | 6.18% (2020) | 9 / 130 (7%) |
| Socialist Left | Norway | 1975 | 6.02% (2017) | 11 / 169 (7%) |
| Brazilian Socialist Party | Brazil | 1947 | 5.52% (2018) | 31 / 513 (6%) |
| Democratic Labour Party1 | Brazil | 1979 | 4.68% (2018) | 28 / 513 (5%) |
| La France insoumise | France | 2016 | 11.03% (2017) | 17 / 577 (3%) |
| The Left | Luxembourg | 1999 | 5.48% (2018) | 2 / 60 (3%) |
| Socialism and Liberty Party | Brazil | 2004 | 2.85% (2018) | 10 / 513 (2%) |
| Free and Equal1 | Italy | 2017 | 3.39% (2018) | 14 / 630 (2%) |
| Movement of Socialist Democrats | Tunisia | 1978 | 1.04% (2019) | 1 / 217 (0.5%) |
| Armenian Revolutionary Federation1 | Armenia | 1890 | 3.89% (2018) | 0 / 132 (0%) |
| Workers' Party1 | Singapore | 1957 | 14.99% (2025) | 10 / 97 (10%) |
- 1Parties which are also social democratic.
See also
- List of social democratic parties
- List of democratic socialist parties and organizations
- List of socialist parties with national parliamentary representation
- List of communist parties represented in European Parliament
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