|Youth wing||Social Democratic Youth of Scandinavia|
|International affiliation||Socialist International|
Founded by Louis Pio in 1871, the party first entered the Folketing in 1884. It first formed a government in 1924 under Hjalmar Branting in a coalition with the Radicals. The first Social Democratic majority government, led by Thorvald Stauning, was created in 1929. During Stauning's government, the Social Democrats exerted a profound influence on Scandinavian society, laying the foundation of the Scandinavian welfare state.
The Social Democrats' position has a theoretical base within Marxist revisionism. Its party program interchangeably calls their ideology democratic socialism, or social democracy, though few high-level representatives have invoked socialism since Olof Palme. The party supports social welfare provision paid for from progressive taxation. The party supports a social corporatist economy involving the institutionalization of a social partnership system between capital and labor economic interest groups, with government oversight to resolve disputes between the two factions.