Socialist Workers' Party (Finnish: Sosialistinen Työväenpuolue, Swedish: Socialistiska Arbetarepartiet) was a political party in Finland. The STP was founded in 1973 as split from Social Democratic Union of Workers and Smallholders (TPSL). STP emerged out of a group that did not approve of the return of TPSL to the Social Democratic Party.

STP had electoral alliances with Finnish People's Democratic League (SKDL), the mass front dominated by the Communist Party of Finland (SKP) but with little success. When SKP (and SKDL) split in 1985-1986 STP cooperated with Democratic Alternative which was founded by Communist Party of Finland (Unity) (SKPy).

In february 1990, STP chairman Pentti Waltzer said the party would join the new Left Alliance if Democratic Alternative decided to merge with it,[2] which later happened.


Year MPs Votes
1975 -- 9 457 0.34%
1979 -- 2 955 0.10%
Year Councillors Votes
1976 2 1 901 0.07%
Year Electors Votes
1978 -- 2 187 0.1%


  1. Mitä missä milloin 1975 (Otava 1974), p. 178.
  2. Marja Haapio & Matti Virtanen: Vasemmistoliiton "torikokous" kerää monenlaisia sosialisteja (Helsingin Sanomat 8.2.1990)

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