Won the 24 March 2026 election with the red bloc. Mette Frederiksen is the starting point for forming a new government. Pairs tight immigration rules with an expansive welfare agenda.
About the party
Socialdemokratiet is Denmark's historically most influential party and the cornerstone of the modern welfare state. Founded in 1871 by the labour movement, it is today a broad-based party under Mette Frederiksen's pragmatic leadership, with a firm line left on welfare and right on immigration. At the 24 March 2026 election the party won 21.9 per cent and 38 seats, its lowest result since 1903. The red bloc won with 84 seats to the blue bloc's 73.
Historical milestones
1871Founded by Louis Pio as Denmark's first workers' association.
1924Thorvald Stauning formed the first Social Democrat-led government.
1933The Kanslergade Agreement laid the foundations of the modern Danish welfare state.
2019Mette Frederiksen formed a single-party government and passed the landmark Climate Act.
2022Formed a historic broad-based centrist SVM government with Venstre and Moderaterne.
202621.9% and 38 seats — the party's lowest result since 1903. Red bloc won the election.
Typical voter profile
Trade union members, public-sector employees, and the working class. Strongest in industrial municipalities, urban working-class neighbourhoods, and among pensioners tied to core welfare services.
Election history
201948 seats
202250 seats
202638 seats
Key policy areas
Core issue
The welfare state
The party's core identity since 1871. Free, universal access to healthcare, education, and social services. Protection of the most vulnerable in society.
Core issue
Strict immigration policy
Under Frederiksen, the party has adopted much of the immigration-critical agenda: limiting non-Western immigration, demanding integration, and pursuing deportation policies.
High priority
Public schools and education
A class-size cap of 14 pupils in the youngest primary school years is the party's flagship policy for 2026. Seventy-six per cent of all Danish children attend public schools.
High priority
Defence and NATO
From a traditionally dovish stance to actively backing historic rearmament: 3.5 per cent of GDP on defence by 2033 and full support for Ukraine.
Key issue
Climate
The 2020 Climate Act sets a legally binding target of a 70 per cent CO2 reduction by 2030. Denmark is to be a green frontrunner.
Key issue
Wealth tax
A new 2026 flagship policy: reintroducing a wealth tax on the richest — a clear leftward shift on taxation and a signal of greater redistribution.
Positions on policy topics
Has pursued a strict line since 2019, including the "paradigm shift" that prioritises repatriation over integration. Combines tighter rules with demands for self-sufficiency.
Enacted the legally binding 70% target and brokered the Green Tripartite Agreement on an agricultural CO2 levy. Aims to reach the target through green industry and CCS technology.
Wants to maintain high welfare standards funded through redistribution. Moderate on tax levels but critical of large tax cuts for the wealthiest.
Strong defender of the universal welfare state, particularly hospitals and childcare. Opposed to letting private providers take over core public services.
Clearly pro-EU and pro-NATO. Supports enlargement and stronger common defence, especially after Russia's invasion of Ukraine.
Wants to strengthen the police and ensure effective law enforcement combined with social prevention programmes.
Wants more social housing and limits on speculative property investment. Supports the "ghetto plans" to counter parallel societies.
A class-size cap of 14 pupils in the youngest school years is the flagship policy for the 2026 election. Wants to invest in stronger academic standards and inclusion.
Wants to strengthen the health service with shorter waiting lists, better mental health services and the ongoing health structure reform.
Under Mette Frederiksen: shifted from traditional defence restraint to active support for 3.5% of GDP and full backing for Ukraine.
Wants to combine business-friendliness with social requirements and supports green industrial development as a future growth engine.
Strong defender of the trade union movement and the collective bargaining system as the foundation of the Danish labour market.
Wants to give elderly care a significant boost with better staffing ratios and an elderly care act that puts dignity at the centre.
Supports digital transformation of the public sector and wants to regulate AI so that citizens and workers are protected.
Key politicians
MF
Mette Frederiksen
NW
Nicolai Wammen
PH
Peter Hummelgaard
MB
Morten Bødskov
MH
Magnus Heunicke
MT
Mattias Tesfaye
+ 5 flere politikere
Challenges and criticism
Minksagen: Beslutningen om at aflive alle mink i november 2020 – uden juridisk hjemmel – er en af de mest omstridte politiske beslutninger i nyere dansk historie og lægger et vedvarende pres på troværdigheden.
Afskaffelsen af Store Bededag som helligdag i 2023 skabte stor utilfredshed i det socialdemokratiske bagland og fagbevægelsen – de primære vælgergrupper, som Frederiksen byggede sin magt på.
Valgresultatet den 24. marts 2026 – 21,9 % og 38 mandater – var partiets dårligste siden 1903. Rød blok vandt med 84 mandater, og Mette Frederiksen har udgangspunktet for forhandlinger om en ny regering.
Sources
socialdemokratiet.dklex.dk – "Mette Frederiksen"faktalink.dk – "Socialdemokratiet"da.wikipedia.org