The Progressive Alliance of Socialists and Democrats (S&D) is the political group in the European Parliament of the Party of European Socialists (PES). It represents centre-left and social democratic parties from across the European Union, making it the second largest political group in the Parliament as of 2026.
If you have ever wondered how progressive politics works at the EU level, this guide breaks down everything you need to know. Understanding the S&D Group matters because it shapes legislation affecting over 450 million Europeans. From workers’ rights to climate policy, this group plays a decisive role in Brussels.
In this article, you will learn what the S&D Group actually does, how it differs from similar left-wing groups, and why its position in Parliament matters for EU policy. We will cover its history, values, leadership, and current influence based on the latest data available in 2026.
Table of Contents
What Is the S&D Group in the European Parliament?
The S&D Group, officially known as the Group of the Progressive Alliance of Socialists and Democrats in the European Parliament, is the parliamentary arm of the Party of European Socialists. It brings together Members of the European Parliament (MEPs) from social democratic, socialist, and labour parties across EU member states.
The group sits in the political centre-left of the European Parliament spectrum. Unlike national political parties, the S&D is a transnational parliamentary group that coordinates voting and policy positions among its members. This structure allows parties from different countries to work together on common goals despite national differences.
As of 2026, the S&D Group holds the position of second largest political group in the European Parliament. This ranking gives it significant influence over legislative outcomes, though it typically trails behind the centre-right European People’s Party (EPP) in overall seat numbers.
The Relationship Between S&D and PES
Many people confuse the S&D Group with the Party of European Socialists (PES), but they serve different functions. The PES is a European political party that operates across EU member states, coordinating national parties and running European election campaigns.
The S&D Group, by contrast, exists only within the European Parliament itself. It is the parliamentary expression of PES parties once MEPs are elected. Think of it this way: the PES is the party organization, while the S&D is the parliamentary team that shows up to vote and debate in Brussels and Strasbourg.
Not every MEP from a PES member party automatically joins the S&D Group, though most do. The relationship remains close, with regular coordination between PES leadership and the S&D Group presidency.
Current Size and Composition
The S&D Group typically comprises between 130 and 150 MEPs depending on election results and political shifts. This represents roughly 20% of total seats in the European Parliament, a significant bloc that cannot be ignored in legislative negotiations.
Member parties come from nearly all 27 EU member states. Major delegations include the German SPD, French Socialist Party, Italian Democratic Party, Spanish PSOE, and British Labour Party (prior to Brexit). Each national delegation contributes MEPs proportionally to their electoral success at home.
The group includes some of the largest individual national parties in Europe. This diversity creates both strength and challenge, as the group must balance differing national perspectives while maintaining cohesive European policy positions.
Core Values and Principles
The S&D Group operates under five core values that define its political identity and policy approach. These principles appear consistently in group communications, legislative priorities, and coalition negotiations.
Freedom represents individual liberty and the protection of fundamental rights. The group champions civil liberties, freedom of expression, and democratic institutions against authoritarian threats.
Equality drives the group’s commitment to social justice and equal opportunity. This principle translates into support for gender equality, LGBTQ+ rights, anti-discrimination measures, and economic policies that reduce inequality.
Solidarity emphasizes collective responsibility and mutual support among European nations and citizens. The S&D consistently backs EU cohesion policy, development aid, and social safety nets that protect vulnerable populations.
Diversity celebrates the multicultural nature of European society. The group promotes policies that respect different cultures, languages, and identities while building common European goals.
Fairness underpins economic and social policy priorities. This includes fair taxation, workers’ rights, consumer protection, and rules that prevent corporate abuse of market power.
Leadership and Structure
The S&D Group operates under a structured leadership system that enables coordination across national delegations and policy areas. Understanding this structure helps explain how decisions are made within the group.
Group President: Iratxe Garcia Perez
Spanish MEP Iratxe Garcia Perez serves as President of the S&D Group as of 2026. She was elected to this position in 2019 and re-elected for subsequent terms, providing continuity in leadership during a challenging political period.
Garcia Perez brings experience from Spanish politics and previous European Parliament roles. Her leadership focuses on rebuilding progressive influence in Europe, strengthening social democratic values, and positioning the group as a credible alternative to right-wing politics.
The President represents the group externally, coordinates with other parliamentary group leaders, and sets strategic direction. Garcia Perez has been particularly vocal on issues including gender equality, climate justice, and workers’ rights.
The Bureau and Secretariat
The S&D Bureau functions as the group’s executive body, typically including vice-presidents representing different national delegations and policy areas. This body meets regularly to coordinate positions on upcoming legislative votes and strategic decisions.
A professional secretariat supports the group’s operations, providing policy research, legislative analysis, and administrative coordination. The secretariat includes policy advisors specializing in specific areas like environment, economy, foreign affairs, and social policy.
This structure allows the S&D to maintain consistent positions across hundreds of legislative proposals while respecting national delegation autonomy on sensitive issues.
Member Parties and National Delegations
The S&D Group draws members from social democratic and centre-left parties across the European Union. This section outlines the major national delegations and their relative weight within the group.
Major National Delegations
Germany’s Social Democratic Party (SPD) typically provides one of the largest national delegations. German MEPs often hold influential positions within the group and contribute significantly to policy development, particularly on economic and industrial issues.
Spain’s Socialist Workers’ Party (PSOE) maintains a substantial delegation that has grown in importance. Under the leadership of Iratxe Garcia Perez, Spanish MEPs play a central role in group strategy and European policy formation.
Italy’s Democratic Party (PD) contributes a significant bloc of MEPs, though Italian socialist representation has fragmented historically. The PD delegation focuses heavily on economic governance, migration policy, and institutional reform.
France’s Socialist Party (PS) has seen its delegation size fluctuate with domestic electoral fortunes. Despite smaller numbers in recent terms, French MEPs remain influential on foreign policy, defense, and European integration issues.
Geographic Representation
The S&D Group includes member parties from all corners of Europe. Northern delegations like Sweden, Denmark, and Finland bring strong traditions of social welfare and environmental policy. These parties often push the group toward more progressive positions on climate and social issues.
Southern European parties from Portugal, Greece, and Cyprus emphasize economic solidarity and support for cohesion policy. These delegations often prioritize regional development, youth unemployment, and debt relief issues.
Central and Eastern European representation includes parties from Poland, Romania, Hungary, and other former communist countries. These delegations sometimes balance progressive economic policy with more conservative social positions, reflecting their domestic political contexts.
Role and Influence in the European Parliament
The S&D Group’s position as the second largest political group gives it substantial influence over European legislation and parliamentary procedures. This section explains how the group exercises this influence in practice.
Legislative Influence
European Parliament decisions typically require majority support, meaning the S&D must either build coalitions or block legislation through opposition. The group frequently partners with the Greens/EFA and The Left groups on progressive legislation, while occasionally working with the EPP on centrist compromises.
Committee assignments determine much of the S&D’s practical influence. The group holds significant positions on key committees including Environment, Employment, and Economic Affairs. S&D rapporteurs (MEPs responsible for drafting reports on specific legislation) shape countless EU laws affecting daily life.
The group has been particularly influential on social legislation, environmental protection, and consumer rights. Recent achievements include strengthened workers’ rights directives, climate legislation, and digital privacy protections.
Coalition Building
European Parliament politics rarely involves single-party governance. The S&D must constantly negotiate with other groups to pass legislation or block proposals. These negotiations happen through formal channels and informal backroom discussions.
The S&D-Greens-Left coalition forms naturally on many progressive issues, though The Left sometimes pushes further than S&D comfort allows. On economic and institutional matters, the S&D occasionally finds common ground with the liberal Renew Europe group.
The group also maintains relationships with the centre-right EPP, though these have become more adversarial in recent years. When the EPP and S&D disagree, legislation often stalls or requires significant compromise.
Policy Priorities and Achievements
The S&D Group advocates for a specific set of policy priorities that reflect its social democratic values. Understanding these priorities helps explain the group’s voting patterns and legislative focus.
Social Justice and Workers’ Rights
Protecting and extending workers’ rights remains central to S&D policy. The group has championed the European Pillar of Social Rights, minimum wage directives, and protections for platform workers in the gig economy.
Recent achievements include the Platform Workers Directive, which aims to improve conditions for delivery drivers and ride-share workers. The group also pushed successfully for improved parental leave rights and pay transparency rules to address the gender pay gap.
The S&D consistently supports strengthening collective bargaining rights across the EU. This positions the group against some business interests but aligns it with European trade union movements.
Climate Action and Green Transition
The S&D advocates for ambitious climate targets and a just transition to a green economy. The group supported the European Green Deal and continues pushing for faster emission reductions and stronger environmental protections.
The “just transition” concept is particularly important to S&D messaging. This approach emphasizes that climate action must not harm workers or communities dependent on fossil fuel industries. The group supports retraining programs, industrial transition support, and social protections alongside environmental regulations.
Recent legislative battles have focused on the Fit for 55 package, carbon border adjustments, and renewable energy targets. The S&D generally supports stronger measures than the EPP but more market-friendly approaches than The Left.
Economic Reform and Fair Taxation
The S&D pushes for economic policies that reduce inequality and ensure corporations pay fair taxes. This includes support for digital taxation, minimum corporate tax rates, and crackdowns on tax avoidance.
The group advocates for stronger economic governance within the eurozone, including increased fiscal capacity at the EU level. This positions the S&D in ongoing debates about reforming EU fiscal rules and creating new financial instruments for economic stabilization.
Digital policy represents a growing focus area. The S&D has been influential on data protection, platform regulation, and artificial intelligence governance, generally favoring stronger consumer and citizen protections over pure market approaches.
S&D vs Other Political Groups
Understanding the S&D requires distinguishing it from other political groups in the European Parliament. This section clarifies how the group differs from its main competitors and allies.
S&D vs EPP
The European People’s Party (EPP) represents the centre-right and Christian democratic tradition, making it the S&D’s primary ideological opponent. The EPP typically holds more seats than S&D, often placing it in the driver’s seat for parliamentary leadership positions.
Key differences emerge on economic policy, where EPP favors market liberalization while S&D emphasizes social protections. Climate policy also divides the groups, with S&D generally supporting more ambitious targets and faster transitions.
Despite differences, the two groups sometimes cooperate on institutional matters and foreign policy. Both support European integration broadly, distinguishing them from more eurosceptic groups.
S&D vs The Left (GUE-NGL)
The Left group, formerly known as GUE-NGL, sits to the left of S&D on the political spectrum. It includes more radical left parties, communists, and some populist movements that reject social democratic moderation.
The Left often criticizes the S&D for being too compromising with centrist and right-wing forces. On economic matters, The Left typically demands more radical redistribution, nationalization, or anti-capitalist measures than S&D supports.
Despite tensions, the two groups frequently vote together on progressive social legislation and environmental measures. The S&D provides the practical legislative muscle that The Left sometimes lacks, while The Left pulls S&D positions leftward through competition.
S&D vs Greens/EFA
The Greens/European Free Alliance combines environmental parties with regionalist movements. This group has grown significantly in recent years and often cooperates with S&D on climate and social legislation.
The Greens sometimes outflank the S&D on environmental ambition, pushing for faster phase-outs of fossil fuels and stronger nature protections. The S&D typically balances green priorities with economic and social concerns more explicitly.
On social issues, the two groups are often aligned, supporting LGBTQ+ rights, gender equality, and migration reform. Coalition building between S&D and Greens has become increasingly common as both groups grow.
Is S&D Left or Right Wing?
The S&D occupies the centre-left of the political spectrum. It is not a far-left or radical socialist group, but rather represents mainstream social democratic politics in the European tradition.
Within national contexts, S&D member parties typically position themselves between centrist liberals and more radical left forces. In Germany, the SPD sits between the Greens and Die Linke. In France, the Socialists occupy space between Macron’s liberals and France Insoumise.
This centrist positioning allows the S&D to build broad coalitions but also creates tension with more radical voices. The group supports market economies with strong social protections rather than socialist transformation of economic systems.
FAQs
What is S&D?
S&D stands for the Progressive Alliance of Socialists and Democrats. It is the centre-left political group in the European Parliament that brings together social democratic MEPs from across the European Union. The group promotes values including freedom, equality, solidarity, diversity, and fairness while advocating for social justice, workers’ rights, and environmental protection.
Is S&D left or right wing?
The S&D is centre-left. It represents social democratic and progressive parties that support market economies with strong social protections. The group sits between centrist liberals on the right and more radical left groups like The Left (GUE-NGL). S&D parties typically advocate for workers’ rights, social justice, and environmental protection while maintaining support for European integration and democratic institutions.
What is the difference between PES and S&D?
PES (Party of European Socialists) is a European political party that coordinates socialist and social democratic parties across EU member states. S&D (Progressive Alliance of Socialists and Democrats) is the parliamentary group formed by PES party MEPs within the European Parliament. Think of PES as the party organization and S&D as the parliamentary team. PES runs campaigns and coordinates parties; S&D votes on legislation and debates in Brussels.
How many MEPs are in the S&D Group?
The S&D Group typically holds between 130 and 150 seats in the European Parliament, making it the second largest political group. This represents approximately 20% of total MEPs. The exact number fluctuates with election results and occasional shifts in group membership. Major delegations come from Germany, Spain, Italy, and other EU member states with strong social democratic traditions.
Who leads the S&D Group?
Iratxe Garcia Perez, a Spanish MEP from the PSOE party, serves as President of the S&D Group as of 2026. She was first elected to this position in 2019 and has been re-elected for subsequent terms. The group also includes a Bureau with vice-presidents from various national delegations and a professional secretariat that supports policy research and legislative coordination.
What has the S&D Group achieved recently?
Recent S&D achievements include the Platform Workers Directive improving gig economy conditions, strengthened parental leave rights, pay transparency rules to address gender pay gaps, and support for the European Green Deal. The group has been influential on digital privacy legislation, minimum wage directives, and consumer protection rules. S&D MEPs hold key rapporteur positions on major climate and social legislation.
Conclusion
The S&D Group represents the voice of centre-left, social democratic politics within the European Parliament. As the second largest political group, it wields significant influence over legislation affecting nearly half a billion Europeans.
Understanding what is the S&D Group in the European Parliament helps clarify how progressive politics operates at the EU level. The group balances idealistic values like equality and solidarity with the practical demands of coalition building in a diverse political environment.
If you are following EU politics, researching European integration, or simply trying to understand how your representatives in Brussels operate, the S&D Group deserves your attention. Its positions on workers’ rights, climate action, and social justice shape the European Union’s direction in 2026 and beyond.
For those interested in progressive politics, the S&D offers a case study in how social democratic values adapt to supranational governance. The group’s continued relevance depends on its ability to deliver concrete improvements for European citizens while maintaining its distinctive political identity.