Before the establishment of the national SP, there were various 19th-century
labour movements in Switzerland such as the
Grütli Union, the
Swiss Trade Union Federation and several local
social democratic parties. Most of these labour parties only lasted a short time, until the foundation of the Social Democratic Party on 21 October 1888 (the Swiss
Labour Day).
Albert Steck of Bern composed the party's
platform which emphasised
democracy, rejected revolutionary aspirations, and mandated a democratic solution to the social question. The first party president was Alexander Reichel of Bern. Two years after the party's foundation,
Jakob Vogelsanger was the first Social Democrat to be elected to the
National Council. In 1904, the moderate party platform was replaced at a party conference in Aarau with a
Marxist program written by Otto Lang. The
first-past-the-post voting system for elections to the National Council and the borders of the electorates initially prevented the party from achieving serious political power on the national level, despite growing numbers of supporters. Two
popular initiatives for the introduction of a
proportional voting system were rejected. The party's historical archives are hosted today by the
Swiss Social Archives, which was founded in 1906 by Paul Pflüger. At a 1912 party conference in
Neuchâtel, the question of women's suffrage was debated for the first time. The SP accepted a proposal that committed the party to take any opportunity to "agitate for the introduction of women's suffrage."
Interwar period Although Switzerland remained
neutral in the
First World War, it did not avoid the spiralling economic crisis that accompanied it. The resulting social tension was unleashed in 1918 by the labour unions and the SP who organised the
1918 Swiss general strike. The goal of the strike was a fundamental reorganisation of society. The
Federal Council issued an ultimatum to the strikers and allowed the military occupation of central points. In this way the strike was ended after four days. Political action was quickly taken to conciliate the strikers with the introduction of a 48-hour working week and a popular initiative on proportional elections to the
National Council in the
1918 Swiss referendums which passed on 13 October 1918. In the
1919 Swiss federal election, the SP doubled its mandate from 20 to 41 members. With the third party platform, adopted in 1920, disagreement within the party grew ever greater. In particular the fact that the platform called for the foundation of a
dictatorship of the proletariat during the transitional phase from a
capitalist class-based society to a socialist commune sparked violent dispute within the party. In 1921, the party decided not to join the
Communist International. The left wing of the party then split from the SP and founded the
Communist Party of Switzerland. In 1926, the SP joined the
Labour and Socialist International and continued to be a member of until 1940. With increasing power in parliament, the party now also demanded membership of the government, but their candidate in 1929 was not elected to the Federal Council. On the other hand, the party managed to enter the executive at a cantonal level in 1933.
Geneva was the first canton to have a socialist government, with
Léon Nicole as president. In the fourth party platform, promulgated in 1935, the SP rejected the idea of the dictatorship of the proletariat, but supporting the creation of a socialist society on "free and consensual foundations" remained the party's goal.
In government , the first SP member of the
Federal Council of Switzerland.|200x200px In the
1943 Swiss federal election, the SP achieved the greatest electoral success in its history and became the largest
parliamentary group.
Ernst Nobs was the first member of SP to be elected to the Federal Council. With introduction of the , a further demand dating back to the time of the Landesstreik was achieved. After the failure of an SP referendum on economic reforms in 1953, the SP member of the Federal Council,
Max Weber, and the general-secretary,
David Farbstein, resigned. The SP remained in opposition until the introduction of the "
magic formula" in 1959, which gave it two seats on the Federal Council. Since that time the SP has been a member of the grand coalition which governs Switzerland. Ten years later in March 1993,
Ruth Dreifuss was elected as the first SD woman to serve in the Federal Council. On that occasion too, the
United Federal Assembly did not choose the official candidate of the SP (
Christiane Brunner), but the unofficial candidate Dreifuss (the ). In 1990, the SP party conference accepted Switzerland's accession to the
International Monetary Fund with clear conditions and elected the Valais canton councillor,
Peter Bodenmann, as party president. At the 1992 party conference in Genf, the SP decided to support accession to the
European Economic Area as a first step towards membership of the
European Economic Community and endorsed a drug policy involving the
decriminalisation of drug consumption, controlled sale of drugs for medicinal purposes, and eventual legalisation of drugs. The following year, the SP supported the national people's initiative "for a reasonable drug policy" which envisioned the legalisation of
cannabis. The SP supported the 1994 national initiative "for the protection of the Alps" which sought a substantial shift of transport of goods through the Alps from road to rail. After Otto Stich's resignation from the Federal Council in 1995, the Federal Councillor
Moritz Leuenberger was elected as his successor. In the
1995 Swiss federal election, the SP made a substantial recovery and was once again the largest party in the Federal Council. In June 1997, the party conference chose Zurich city councillor,
Ursula Koch as party president (the first woman to hold the role), rather than the favourite . In the
1999 Swiss federal election, Koch was also elected to the Federal Council. She resigned as party president and Federal councillor in 2000, due to internal party pressure. Her successor was Christiane Brunner, who led the party until 2004. In the
2007 Swiss federal election, the SP suffered massive losses, falling to 19.5% of the vote, with only 43 seats in the National Council. In the following federal elections (
2011 and
2015), their electoral support remained at the same level. In the
Council of States, where the SP traditionally have had only a few seats, the party was able to increase its representation over the 2000s and now hold 12 out of 46 seats. In 2017, the party withdrew from the
Socialist International and joined the
Progressive Alliance. After losing a large vote share in the
2019 elections to the green party the SP regained some of its 2019 losses in the most recent
2023 elections and holds 41 seats on the
National Council obtaining 18.27% of the vote. == Structure ==