Montevideo
| Country | Party / Organisation |
| Argentinia | Socialist Party (PS) |
| Argentinia | GEN Party (GEN) |
| Austria | Social Democratic Party of Austria (SPÖ) |
| Bolivia | Movement for Socialism (MAS) |
| Bolivia | Movement Without Fear (MSM) |
| Brazil | Partido dos Trabalhadores (PT) |
| Brazil | Brazilian Socialist Party (PSB) |
| Chile | Socialist Party (PS) |
| Chile | Party for Democracy (PPD) |
| Chile | Social Democrat Radical Party (PRSD) |
| Dominican Republic | Majority Revolutionary Party (PRM) |
| El Salvador | Farabundo Martí National Liberation Front (FMLN) |
| Germany | Social Democratic Party of Germany (SPD) |
| Great Britain | The Labour Party (LP) |
| Grenada | National Democratic Congress (NDC) |
| Hungary | Socialdemocrats (Szocdemek) |
| Iran | Komala Iranian Kurdistan Party |
| Iraq | Patriotic Union of Kurdistan (PUK-KSDP) |
| Israel | Meretz-Yachad |
| Italy | Democratic Party (PD) |
| Ivory Coast | Cap Union f. Dem. and Development (CAP-UDD) |
| Jordan | Jordan Democratic People’s Party (JDSP) |
| Mexico | Party of Democratic Revolution (PRD) |
| Morocco | Socialist Union of Popular Forces (USFP) |
| Netherlands | Labour Party (PvdA) |
| Palestine | Fatah |
| Paraguay | Frente Guasú (FG) |
| Philippines | Citizens‘Action Party (Akbayan) |
| Serbia | New Democratic Party |
| Spain | Spanish Socialist Workers’ Party (PSOE) |
| Swaziland | People’s United Democratic Movement (PUDEMO) |
| Switzerland | Swedish Social Democratic Party (SAP) |
| Tunisia | ETTAKATOL |
| Uruguay | Socialist Party of Uruguay (PSU) |
| Uruguay | Frente Amplio |
| Western Sahara | Frente Polisario |
| Young European Socialists (YES) | |
| International Union of Socialist Youth (IUSY) | |
| Party of European Socialists (PES) | |
| PES Women | |
| International Trade Union Confederation ( ITUC) | |
| Trade Union Confederation of the Americas (TUCA – CSA) | |
| Argentinia | General Confederation of Labour (CGT) |
| Chile | Workers’ United Center (CUT) |
| El Salvador | Confederación Sindical de Trabajadores y Trabajadores (CSTS) |
| Paraguay | Unitary Workers Central Autentica (CUT A) |
| Spain | General Workers‘ Confederation (UGT) |
| Uruguay | Plenario Intersindical de Trabajadores – Convención Nacional de Trabajadores (PIT CNT) |
| Uruguay | United Nations Economic Commission for Latin America and the Caribbean (CEPAL) |
| Association Notre Europe | |
| Nuevo Sociedad | |
| Solidar | |
| Friedrich-Ebert-Foundation | |
| Progressive Alliance |
