What is Social Democratic Party of Finland?
{{Infobox political party | name = Social Democratic Party of Finland | native_name = ''Suomen sosialidemokraattinen puolue''{{refn|For historical reasons, the party's name is spelled in the old-fashioned way, with a short ''a''.|group=nb}}<br>''Finlands socialdemokratiska parti'' | native_name_lang = fi | logo = Sozialdemokratische Partei Finnlands Logo.svg | colorcode = {{party color|Social Democratic Party of Finland}} | abbreviation = SDP | leader = [[Antti Lindtman]] | founded = {{start date and age|1899|7|20|df=y}} | headquarters = Saariniemenkatu 6, [[Helsinki]] | newspaper = ''[[Demokraatti]]'' | student_wing = {{nowrap|[[Social Democratic Students (Finland)|Social Democratic Students]]}} | youth_wing = [[Social Democratic Youth (Finland)|Demarinuoret]] | womens_wing = {{ill|Social Democratic Women in Finland|fi|Sosialidemokraattiset Naiset}}<ref>{{cite web|title=Member Organisations|publisher=Socialist International Women|access-date=14 February 2019|url=http://www.socintwomen.org.uk/en/members.html|archive-date=19 February 2023|archive-url=https://web.archive.org/web/20230219103959/http://www.socintwomen.org.uk/en/members.html|url-status=dead}}</ref> | membership_year = 2019 | membership = 39,450<ref>{{cite web|url=https://sdp.fi/fi/tutustu/tietoa-sdpsta/|title=About the SDP|website=Suomen sosialidemokraattinen puolue|language=fi|date=2019|access-date=9 May 2020}}</ref> | ideology = [[Social democracy]] <!-- Sources are listed in the introduction, sources are not needed here --> | position = [[Centre-left politics|Centre-left]] | european = [[Party of European Socialists]] | international = [[Progressive Alliance]]<ref>{{cite web|url=http://progressive-alliance.info/network/parties-and-organisations/|title=Parties & Organisations|publisher=Progressive Alliance|access-date=22 July 2019|archive-date=6 March 2017|archive-url=https://web.archive.org/web/20170306042542/http://progressive-alliance.info/network/parties-and-organisations/|url-status=dead}}</ref><br>[[Socialist International]]<ref>{{cite web|url