| Albania |
Socialist Party of Albania, SPA |
| Algeria |
Socialist Forces Front, FFS |
| Andorra |
Social Democratic Party of Andorra, PS |
| Angola |
MPLA |
| Argentina |
Radical Civic Union, UCR |
| Armenia |
ARF Armenian Socialist Party |
| Austria |
Social Democratic Party of Austria, SPÖ |
| Azerbaijan |
Social Democratic Party of Azerbaijan, SDPA |
| Belarus |
Narodnaya Hramada |
| Belgium |
Socialist Party, PS |
| Bolivia |
National Unity, UN |
| 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 |
| Burkina Faso |
People's Movement for Progress, MPP |
| Cameroon |
Social Democratic Front, SDF |
| Cape Verde |
African Party of Cape Verde's Independence, PAICV |
| Central African Republic |
Movement for the Liberation of the Central African People, MLPC |
| Chad |
National Union for Development and Renewal, UNDR |
| Chile |
Party for Democracy, PPD |
| Chile |
Radical Party, PR |
| Chile |
Socialist Party of Chile, PS |
| Colombia |
Liberal Party of Colombia, PLC |
| Costa Rica |
National Liberation Party, PLN |
| Croatia |
Social Democratic Party, SDP |
| Cyprus |
Movement of Social Democrats EDEK |
| Cyprus |
Republican Turkish Party, CTP |
| Cyprus |
Social Democratic Party, TDP |
| Czech Republic |
Czech Social Democratic Party, CSSD |
| Democratic Republic of Congo |
Union for Democracy and Social Progress, UDPS |
| Dominican Republic |
Dominican Revolutionary Party, PRD |
| Egypt |
Egyptian Social Democratic Party |
| Equatorial Guinea |
Convergence for Social Democracy, CPDS |
| Finland |
Finnish Social Democratic Party, SDP |
| France |
Socialist Party, PS |
| Ghana |
National Democratic Congress |
| Greece |
Movement for Change |
| Guatemala |
National Union for Hope, UNE |
| Guinea |
Guinean People's Assembly, RPG |
| Haiti |
Social Democrat Assembly for the Progress of Haiti (Rasanbleman) |
| Haiti |
Union of Haitian Social Democrats |
| Hungary |
Hungarian Socialist Party, MSzP |
| India |
Indian National Congress, INC |
| Iran |
Kurdistan Democratic Party, KDP |
| 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 |
| Kazakhstan |
Nationwide Social Democratic Party, OSDP |
| Kyrgyzstan |
Social Democratic Party of Kyrgyzstan, SDPK |
| Lithuania |
Lithuanian Social Democratic Party, LSDP |
| Lebanon |
Progressive Socialist Party, PSP |
| Luxembourg |
Luxembourg Socialist Workers' Party, LSAP/POSL |
| 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 |
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 |
| 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 |
| Paraguay |
Progressive Democratic Party, PDP |
| Panama |
Democratic Revolutionary Party, PRD |
| Peru |
Peruvian Aprista Party, PAP |
| Philippines |
Philippines Social Democratic Party, PDSP |
| 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 |
| Slovakia |
SMER-Social Democracy |
| South Africa |
African National Congress, ANC |
| Spain |
Spanish Socialist Workers' Party, PSOE |
| Tunisia |
Democratic Forum for Labour and Freedoms, FDTL |
| Turkey |
Republican People's Party, CHP |
| Uruguay |
New Space, PNE |
| Venezuela |
Democratic Action, AD |
| Venezuela |
A New Era, UNT |
| Venezuela |
Voluntad Popular, VP |
| Yemen |
Yemeni Socialist Party |
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