About us

About us

Together, we change the European political agenda.

The Party of European Socialists (PES) brings together the Socialist, Social Democratic and Labour Parties of the EU. The PES is our common platform, where our members come together: activists, party executives, Secretary Generals, Leaders, youth organisations, MPs, MEPs, European Commissioners, Ministers and Prime-Ministers of socialist, social-democratic, labour and democratic parties and organisations within Europe. We also exchange best practices and engage in political campaigning. Our main aim is to support our member parties and organisations.

Party of European Socialists

Learn more about the functioning of the Party of European Socialists (PES), about the Heads of State and Government from our political family, our members, the values that guide our action and check the documents approved in key meetings.


PES in the EU Institutions

The PES is represented in all the European Institutions by its member organisations and leaders. In the European Parliament the PES is represented by the Progressive Alliance of the socialists and Democrats in the European Parliament, also known as the S&D group. It has 145 MEPs from 26 member states. The leader of the group is Iratxe Gracía Pérez.

More about PES in the EU
About us

Our Values

Since the beginning of the PES movement, our fundamental values have been democracy, freedom, equality, peace and justice. These values belong together and, combined, they form a moral compass to build progressive societies.

More about our values


More documents
  • Addressing the energy crisis and accelerating the clean energy transition for all

    Declaration adopted by the PES Presidency of 28 April 2022
    View document April 29, 2022
  • A New Model for Tax Justice in Europe: A shift to ensure fairness and sustainability

    PES publication
    View document April 2, 2022
  • Affordable and clean energy for all

    PES publication
    View document April 2, 2022