São Paulo
| Argentina | Socialist Party (PS) |
| Argentina | GEN Party |
| Australia | Australian Labor Party (ALP) |
| Brazil | Workers’ Party (PT) |
| Cameroon | Social Democratic Front (SDF) |
| Gabon | Gabonese Progress Party |
| Georgia | Georgian Dream Party |
| Germany | Social Democratic Party of Germany (SPD) |
| India | Association for Democratic Socialism (ADS) |
| Iraq | Patriotic Union of Kurdistan (PUK) |
| Israel | Meretz |
| Italy | Democratic Party (PD) |
| Mexico | Party of Democratic Revolution (PRD) |
| Mexico | Citizens’ Movement Party |
| Nepal | Nepali Congress Party |
| Netherlands | Labour Party (PvdA) |
| Norway | Norwegian Labour Party (DNA) |
| Palestine | Fatah |
| Palestine | Palestine National Initiative (PNI) |
| Romania | Uniunea Națională pentru Progresul României (UNPR) |
| Sweden | Swedish Social Democratic Party (SAP) |
| Switzerland | Social Democratic Party of Switzerland |
| Uruguay | Socialist Party of Uruguay (PSU) |
| Western Sahara | Polisario Front |
| Party of European Socialists (PES) | |
| Group of Socialists & Democrats in the European Parliament (S&D) | |
| Global Progressive Forum | |
| International Union of Socialist Youth (IUSY) | |
| Young European Socialists (YES) | |
| Lula Institute | |
| Foundation for European Progressive (FEPS) | |
| International Trade Union Confederation (ITUC) | |
| Trade Union Confederation of the Americas (TUCA) | |
| Labour Federation of Brazil (CUT) | |
| SOLIDAR | |
| Friedrich Ebert Foundation | |
| Progressive Alliance |
