|Description||Left-of-center party founded in 1899 as the far-left Finnish Workers' Party, changing its name to the Finnish Social Democratic Party in 1906 (abbreviated today as 'Social Democrats' but more often called 'The Social Democrats' in the press). A segment of the party had become radicalized by the Russian revolution and the SDP opposed Finland's declaration of Independence from Russia on December 6, 1917, even winding up leading Soviet-allied forces in the Finnish Civil War (January 27, 2018 - May 15, 1918) begun when Leninist Red Guards seized parliamentarians elected by the newly-independent Finns in southern Finland on January 28, 1918. The Red Guards' defeat on May 15, 1918 forced Social Democrat leaders and activists to flee to Russia where they re-founded the Social Democrats as the Finnish Communist Party directly under the control of Joseph Stalin. |
Moderating elements left in Finland led by future prime minister Väinö Tanner began to reverse the party's pro-Soviet tilt and battles came to a head in 1955 when supporters of Väinö Leskinen, the so-called widows, joined the SDP with the anti-Soviet Coalition Party in the 1950s and early 1960s, in an alliance called the axis of arms, which lasted for some time, and served to re-legitimize the SDP in the eyes of most Finns.
Party has been led by Finland's current Prime Minister Sanna Marin since 8-23-2020 [Suomen Sosialidemokraattinen Puolue, SDP; Finlands Socialdemokratiska Parti].