Democratic Socialist Party (Japan)

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Democratic Socialist Party
民主社会党 (1960-1969)
民社党 (after 1969)
Founded 1960
Dissolved 10 December 1994
Split from Japanese Socialist Party
Merged into New Frontier Party
Youth wing Minsha Youth
Ideology 1960-1969:
Democratic socialism
After 1969:
Social democracy
Political position Centre-left
International affiliation Socialist International
Politics of Japan
Political parties

The Democratic Socialist Party (originally 民主社会党 Minshu Shakai-tō?, later simply 民社党 Minsha-tō) was a social-democratic party in Japan.


The Democratic Socialist Party (DSP) was established in 1960 by a breakaway group (led by Suehiro Nishio) of the Japan Socialist Party. It was made up of many members of the former Rightist Socialist Party of Japan, a moderate democratic socialist faction that existed between 1948 and 1955. The DSP advocated Democratic socialism and was a member of the Socialist International.[1] The party supported the construction of a welfare state, opposed totalitarianism, and strongly backed the Japan-US alliance. It derived much of its financial and organisational support from the Domei private-sector labor confederation.

The DSP was dissolved in 1994 to join the New Frontier Party. In 1996, the Japan Socialist Party was transformed into the Social Democratic Party. Two years later, in 1998, the New Frontier Party dissolved and most of its members eventually joined the Democratic Party of Japan. Despite the dissolution of the DSP in 1994, its youth organisation (Minsha Youth) survived until 2003 and was a member of the International Union of Socialist Youth (IUSY). After Minsha Youth was dissolved, some of its former members and independent social democrats formed a new youth organisation, Young Socialists, which retained full membership in IUSY; however, it was finally dissolved on 8 March 2008 without any successor organisation and abandoned its IUSY membership.


  1. ^ James C. Docherty; Peter Lamb (2 October 2006). Historical Dictionary of Socialism. Scarecrow Press. pp. 187–. ISBN 978-0-8108-6477-1. Retrieved 28 January 2013.