Per Albin Hansson in the context of "Riksdag"

Gustaf V (Oscar Gustaf Adolf; 16 June 1858 – 29 October 1950) was King of Sweden from 8 December 1907 until his death in 1950. He was the eldest son of King Oscar II of Sweden and Sophia of Nassau, a half-sister of Adolphe, Grand Duke of Luxembourg. Reigning from the death of his father Oscar II in 1907 to his own death nearly 43 years later, he holds the record of being the oldest monarch of Sweden with the third-longest reign after Magnus IV (1319–1364) and his own great-grandson, Carl XVI Gustaf (1973–present). He was also the last Swedish monarch to exercise his royal prerogatives, which largely died with him, although they were formally abolished only with the remaking of the Swedish constitution in 1974. He was the first Swedish king since the High Middle Ages not to have a coronation and so never wore the king's crown, a practice that has continued ever since.

Gustaf's early reign saw the rise of parliamentary rule in Sweden although the leadup to World War I induced his dismissal of Liberal Prime Minister Karl Staaff in 1914, replacing him with his own figurehead, Hjalmar Hammarskjöld, the father of Dag Hammarskjöld, for most of the war. However, after the Liberals and Social Democrats secured a parliamentary majority under Staaff's successor, Nils Edén, he allowed Edén to form a new government which de facto stripped the monarchy of virtually all powers and enacted universal and equal suffrage, including for women, by 1919. Bowing to the principles of parliamentary democracy, he remained a popular figurehead for the remaining 31 years of his rule, although not completely without influence. Gustaf V had pro-German and anti-Communist stances which were outwardly expressed during World War I and the Russian Civil War. During World War II, he allegedly urged Per Albin Hansson's coalition government to accept requests from Nazi Germany for logistics support, arguing that refusing might provoke an invasion. His intervention remains controversial.

Folkhemmet (Swedish: [ˈfɔ̂lkˌhɛmːɛt], lit. 'the people's home') is a political concept that played an important role in the history of the Swedish Social Democratic Party and the Swedish welfare state. It is also sometimes used to refer to the long period between 1932 and 1976 when the Social Democrats were in power (except for a brief period in 1936 when Axel Pehrsson-Bramstorp from the Farmers' League was prime minister) and the concept was put into practice, but also works as a poetic name for the Swedish welfare state. Sometimes referred to as "the Swedish Middle Way", folkhemmet was viewed as midway between capitalism and socialism. The base of the folkhem vision is that the entire society ought to be like a family, where everybody contributes, but also where everybody looks after one another. The Swedish Social Democrats' successes in the postwar period is often explained by the fact that the party managed to motivate major social reforms with the idea of the folkhem and the national family's joint endeavor.

The Social Democratic leaders Ernst Wigforss, an avid Keynesian, Gustav Möller and Per Albin Hansson, a social corporatist, are considered the main architects of folkhemmet, with inspiration from the conservative Rudolf Kjellén and the Danish Social Democrats C.V. Bramsnæs and Karl Kristian Steincke. It was later developed by Prime Ministers Tage Erlander and Olof Palme until the Social Democratic Party lost power in 1976. Another important proponent was Hjalmar Branting, who came into contact with the concept while a student at Uppsala University, and went on to become the first socialist Prime Minister of Sweden.