Socialist Party (Netherlands)

Socialist Party
Socialistische Partij
AbbreviationSP
LeaderJimmy Dijk (list)
ChairmanJannie Visscher
SecretaryArnout Hoekstra
Leader in the SenateRik Janssen
Leader in the House of RepresentativesJimmy Dijk
Founded22 October 1971 (1971-10-22)
Split fromCommunist Unity Movement of the Netherlands (Marxist–Leninist)
HeadquartersDe Moed Partijbureau SP Snouckaertlaan 70, Amersfoort
Think tankScientific Office of the SP
Youth wingSP Jongeren (2022–present)
ROOD (2003–2021)
Membership (January 2025) 28,737
Ideology
Political positionLeft-wing[A]
Regional affiliationSocialists, Greens and Democrats
European Parliament groupEuropean United Left/Nordic Green Left (1999–2019)
Colours  Crimson
Senate
3 / 75
House of Representatives
5 / 150
States-Provincial
22 / 570
European Parliament
0 / 31
King's Commissioners
1 / 12
Benelux Parliament
1 / 21
Website
sp.nl
international.sp.nl

^ A: SP has been variously described as left-wing, "old left", far-left, and left-conservative; the latter label is due its more conservative stances on socio-cultural issues.

The Socialist Party (Dutch: Socialistische Partij [soːɕaːˈlɪstisə pɑrˈtɛi]; SP [ɛsˈpeː]) is a democratic socialist political party in the Netherlands. Founded in 1971 as the Communist Party of the Netherlands/Marxist–Leninist (KPN/ML, Dutch: Communistische Partij van Nederland/Marxistisch–Leninistisch), the party has since moderated itself from Marxism–Leninism and Maoism towards democratic socialism and social democracy.

Positioned to the political left of the Labour Party, the party has been part of the parliamentary opposition since it was formed. After the 2006 Dutch general election, the SP became one of the major parties of the Netherlands winning 25 out of 150 parliamentary seats, an increase of 16 seats. In the 2010 Dutch general election, the parliamentary presence of the socialists decreased to 15 seats. In the 2012 Dutch general election, the party maintained those 15 seats. Following the 2017 and 2021 general elections, the SP fell back to the nine seats it held before 2006. After the 2023 Dutch general election, the SP delegation shrank from nine seats to five.