| Austria | Social Democratic Party of Austria (SPÖ) | ||
| Belgium | Socialist Party (SPA) | ||
| Brazil | Brazilian Socialist Party (PSB) | ||
| Cameroon | Social Democratic Front (SDF) | ||
| Croatia | Social Democratic Party (SDP) | ||
| Cyprus | Republican Turkish Party (CTP) | ||
| Denmark | Social Democratic Party | ||
| DR Congo | Union for Democracy and Social Progress (UDPS) | ||
| Egypt | Egyptian Social Democratic Party (ESDP) | ||
| Equatorial Guinea | Convergence for Social Democracy (CPDS) | ||
| Eritrea | Eritrean People‘s Democratic Party (EPDP) | ||
| France | Socialist Party (PS) | ||
| Germany | Social Democratic Party of Germany (SPD) | ||
| Great Britain | Labour Party (LP) | ||
| Guinea | Guinean People‘s Assembly (RPG) | ||
| Hungary | Social Democrats (Szocdemek) | ||
| India | India Association for Democratic Socialism | ||
| Iran | Komala Iranian Kurdistan Party | ||
| Iran | Komala Iranian Kurdistan Party | ||
| Iraq | Kurdistan Socialist Democratic Party (KSDP) | ||
| Iraq | Patriotic Union of Kurdistan (PUK) | ||
| Italy | Democratic Party (PD) | ||
| Ivory Coast | Cap Union for Democracy and Development (CAP-UDD) | ||
| Kenya | Labour Party of Kenya (KLP) | ||
| Lebanon | Progressive Socialist Party (PSP) | ||
| Lithuania | Lithuanian Social Democratic Party (LSDP) | ||
| Macedonia | The Social Democratic Union of Macedonia (SDUM) | ||
| Malaysia | Democratic Action Party (DAP) | ||
| Mauritius | Mauritius Militant Movement (MMM) | ||
| Mexico | Party of Democratic Revolution (PRD) | ||
| Montenegro | Democratic Party of Socialists of Montenegro (DPS) | ||
| Morocco | Socialist Union of Popular Forces (USFP) | ||
| Netherlands | Labour Party (PvdA) | ||
| Norway | Norwegian Labour Party (DNA) | ||
| Palestine | Fatah | ||
| Palestine | Palestinian National Initiative (PNI) | ||
| Philippines | Citizens‘ Action Party (Akbayan) | ||
| Romania | Social Democratic Party (PSD) | ||
| Russia | A Just Russia Party | ||
| Senegal | Socialist Party (PS) | ||
| Serbia | New Democratic Party | ||
| Somalia | Somali Social Unity Party (SSUP) | ||
| Spain | Spanish Socialist Workers‘ Party (PSOE) | ||
| Sweden | Swedish Social Democratic Party (SAP) | ||
| Switzerland | Social Democratic Party of Switzerland (SP) | ||
| Tunisia | Ettakatol | ||
| Tunisia | Tunisian Labour Party (TLP) | ||
| Turkey | Republican People‘s Party (CHP) | ||
| Uruguay | Socialist Party of Uruguay (PSU) | ||
| Western Sahara | Frente Polisario | ||
| Yemen | Yemeni Socialist Party (YSP) | ||
| Zimbabwe | Movement for Democratic Change (MDC-T) | ||
| Foundation for European Progressive Studies (FEPS) | |||
| Foundation Jean JaurèsFoundation Max van der Stoel (FMS) | |||
| Friedrich-Ebert-Foundation (FES) | |||
| Group of Socialists & Democrats in the European Parliament (S&D-Group) | |||
| International Union of Socialist Youth (IUSY) | |||
| Party of European Socialists (PES) | |||
| Party of European Socialist Women (PES Women) | |||
| Solidar | |||
| Tunisian General Labour Union (UGTT) | |||
| Young European Socialists (YES) | |||
