| Albania |
Socialist Party of Albania, SPA |
| Algeria |
Socialist Forces Front, FFS |
| Andorra |
Social Democratic Party of Andorra, PS |
| Angola |
MPLA |
| Argentina |
Socialist Party, PS |
| Argentina |
Radical Civic Union, UCR |
| Armenia |
ARF Armenian Socialist Party |
| Aruba |
People's Electoral Movement, MEP |
| Australia |
Australian Labor Party, ALP |
| Austria |
Social Democratic Party of Austria, SPÖ |
| Belgium |
Socialist Party, PS |
| Belgium |
Socialist Party, SPA |
| Benin |
Social Democratic Party, PSD |
| Bosnia and Herzegovina |
Social Democratic Party of Bosnia and Herzegovina, SDP BiH |
| Brazil |
Democratic Labour Party, PDT |
| Bulgaria |
Bulgarian Social Democrats, PBSD |
| Bulgaria |
Bulgarian Socialist Party, BSP |
| Cameroon |
Social Democratic Front, SDF |
| Canada |
New Democratic Party, NDP/NPD |
| Cape Verde |
African Party of Cape Verde's Independence, PAICV |
| Chile |
Party for Democracy, PPD |
| Chile |
Radical Social Democratic Party, PRSD |
| Chile |
Socialist Party of Chile, PS |
| Colombia |
Liberal Party of Colombia, PLC |
| Costa Rica |
National Liberation Party, PLN |
| Croatia |
Social Democratic Party, SDP |
| Curaçao |
MAN |
| Cyprus |
Movement of Social Democrats EDEK |
| Czech Republic |
Czech Social Democratic Party, CSSD |
| Denmark |
Social Democratic Party |
| Dominican Republic |
Dominican Revolutionary Party, PRD |
| Ecuador |
Democratic Left Party, PID |
| Equatorial Guinea |
Convergence for Social Democracy, CPDS |
| Finland |
Finnish Social Democratic Party, SDP |
| France |
Socialist Party, PS |
| Germany |
Social Democratic Party of Germany, SPD |
| Ghana |
National Democratic Congress |
| Greece |
Panhellenic Socialist Movement, PASOK |
| Guatemala |
National Union for Hope, UNE |
| Guinea |
Guinean People's Assembly, RPG |
| Haiti |
Union of Haitian Social Democrats |
| Hungary |
Hungarian Social Democratic Party, MSzDP |
| Hungary |
Hungarian Socialist Party, MSzP |
| Iceland |
Social Democratic Alliance of Iceland |
| Iraq |
Patriotic Union of Kurdistan, PUK |
| Ireland |
The Labour Party |
| Israel |
Israel Labour Party |
| Israel |
Meretz Party |
| Italy |
Italian Socialist Party, PSI
|
| Jamaica |
People's National Party, PNP |
| Japan |
Social Democratic Party, SDP |
| Lebanon |
Progressive Socialist Party, PSP |
| Lithuania |
Lithuanian Social Democratic Party, LSDP |
| Luxembourg |
Luxembourg Socialist Workers' Party, LSAP/POSL |
| Malaysia |
Democratic Action Party, DAP |
| Mali |
African Party for Solidarity and Justice, ADEMA-PASJ |
| Mali |
Assembly for Mali, RPM |
| Mauritania |
Assembly of Democratic Forces, RFD |
| Mauritius |
Mauritius Labour Party |
| Mauritius |
Mauritius Militant Movement, MMM |
| Mexico |
Party of Democratic Revolution, PRD |
| Mexico |
Institutional Revolutionary Party, PRI |
| Republic of Moldova |
Democratic Party, PDM |
| Mongolia |
Mongolian People's Party, MPP |
| Montenegro |
Democratic Party of Socialists of Montenegro, DPS |
| Montenegro |
Social Democratic Party of Montenegro, SDP |
| Morocco |
Socialist Union of Popular Forces, USFP |
| Mozambique |
Frelimo Party |
| Namibia |
SWAPO |
| Nepal |
Nepali Congress Party |
| Nicaragua |
Sandinista National Liberation Front, FSLN |
| Niger |
Party for Democracy and Socialism of Niger, PNDS |
| Northern Ireland |
Social Democratic and Labour Party, SDLP |
| Pakistan |
Pakistan People's Party, PPP |
| Palestine |
Fatah |
| Panama |
Democratic Revolutionary Party, PRD |
| Paraguay |
'País Solidario' Party |
| Peru |
Peruvian Aprista Party, PAP |
| Poland |
Democratic Left Alliance, SLD |
| Portugal |
Socialist Party, PS |
| Puerto Rico |
Puerto Rican Independence Party, PIP |
| Romania |
Social Democratic Party, PSD |
| Russian Federation |
A Just Russia Party |
| San Marino |
Party of Socialists and Democrats |
| Senegal |
Socialist Party, PS |
| Serbia |
Democratic Party, DS |
| Slovakia |
SMER-Social Democracy |
| South Africa |
African National Congress, ANC |
| Spain |
Spanish Socialist Workers' Party, PSOE |
| Sweden |
Swedish Social Democratic Party, SAP |
| Switzerland |
Social Democratic Party of Switzerland |
| Tanzania |
Chama Cha Mapinduzi, CCM |
| Tunisia |
Democratic Forum for Labour and Freedoms, FDTL |
| Turkey |
Republican People's Party, CHP |
| Uruguay |
New Space, PNE |
| Uruguay |
Socialist Party of Uruguay, PSU |
| USA |
Democratic Socialists of America, DSA |
| Venezuela |
Democratic Action, AD |
| Venezuela |
Movement for Socialism, MAS |
| Yemen |
Yemeni Socialist Party |
| Zimbabwe |
Movement for Democratic Change, MDC |
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