* 1991 – Takako Doi, chair of the Social Democratic Party, becomes Japan's first female speaker of the House of Representatives.

The present Mayor is Élio Manuel Delgado da Maia, elected by a coalition between the Social Democratic Party and the Democratic Social Centre.

The Social Democratic Party ( SPD ) and The Left ( Die Linke ) took control of the city government after the 2001 state election and won another term in the 2006 state election.

After the 2011 state election, there is a coalition of the Social Democratic Party with the Christian Democratic Union, and for the first time ever, the Pirate Party won seats in a state parliament in Germany.

| Social Democratic Party

Lula's Workers ' Party tends to the statist nationalism side, although there are privatizing forces within his party and government, while Cardoso's Social Democratic Party tends to favor the international private market side by taking neoliberal policies.

In 1981, defectors from the moderate wing of the Labour Party, led by former Cabinet ministers Roy Jenkins, David Owen and Shirley Williams, founded the Social Democratic Party.

The Social Democratic Party ( SDP ) was a centrist political party in the United Kingdom that was created on 26 March 1981 and existed until 1988.

Many original members of the future Social Democratic Party had been members of the Manifesto Group within the Labour Party.

Democratic, Democratic Labour, and Radical were all mentioned as possible names for the new party, as well as New Labour ( which future Labour leader Tony Blair would use to promote the Labour Party more than a decade later ) but eventually Social Democratic was settled on because the ' Gang of Four ' consciously wanted to mould the philosophy and ideology of the new party on the Social Democracy practised on mainland Europe.

Much of the party's initial membership came from the Social Democratic Alliance.

de: Social Democratic Party ( Vereinigtes Königreich )

sv: Social Democratic Party

The Bolsheviks, originally also Bolshevists (; derived from bol ' shinstvo, " majority ") were a faction of the Marxist Russian Social Democratic Labour Party ( RSDLP ) which split apart from the Menshevik faction at the Second Party Congress in 1903.

In the 2nd Congress of the Russian Social Democratic Labour Party, held in Brussels and London during August 1903, Lenin and Julius Martov disagreed over the membership rules.

As a result, they ceased to be a faction in the RSDLP and instead declared themselves an independent party, called Russian Social Democratic Labour Party ( bolsheviks )-or RSDLP ( b ).

A 1924 right-wing German political cartoon showing Philipp Scheidemann, the Social Democratic Party of Germany | German Social Democratic politician who proclaimed the Weimar Republic and was its second Chancellor, and Matthias Erzberger, an anti-war politician from the Centre Party ( Germany ) | Centre Party, who signed the Armistice with Germany ( Compiègne ) | armistice with the Allies ( World War I ) | Allies, as stabbing the German Army in the back

Edmund Rüdiger Stoiber ( born 28 September 1941 ) is a German politician, former minister-president of the state of Bavaria and former chairman of the Christian Social Union ( CSU ).

Gro Harlem Brundtland () ( born Gro Harlem, 20 April 1939 ) is a Norwegian Social democratic politician, diplomat, and physician, and an international leader in sustainable development and public health.

* August 7 – Wilhelm Liebknecht, German Social Democratic politician ( b. 1826 )

* September 5 – Otto Bauer, Austrian Social Democratic politician ( d. 1938 )

Helmut Heinrich Waldemar Schmidt (; born 23 December 1918 ) is a German Social Democratic politician who served as Chancellor of West Germany from 1974 to 1982.

Antanas Valionis ( born September 21, 1950 ) is a Lithuanian politician, currently a member of the New Union ( Social Liberals ) party.

Willy Brandt (; born Herbert Frahm ; 18 December 1913 – 8 October 1992 ) was a German statesman and politician, leader of the German Social Democratic Party of Germany ( Sozialdemokratische Partei Deutschlands, or SPD ) from 1964 to 1987, and chancellor of the Federal Republic of Germany from 1969 to 1974.

* Paul de Krom ( 1953 ), politician and State Secretary for Social Affairs and Employment in the Cabinet Rutte

The Communist politician Gustav Sauf was killed, the executive editor of the Social Democrat " Königsberger Volkszeitung ", Otto Wyrgatsch, and the German People's Party politician Max von Bahrfeldt were severely injured.

* Carl Legien ( 1861 – 1920 ), leading politician of the Social Democratic Party of Germany

Ruth Dreifuss ( born January 9, 1940 in St. Gallen ) is a Swiss politician affiliated with the Social Democratic Party.

Ryti had built up relations of trust with leading Social Democratic Party politician Väinö Tanner and President Kyösti Kallio.

( 14 December 1870 – 31 December 1950 ) was an Austrian politician of the Social Democratic Party.

Per Albin Hansson ( 28 October 1885 in Kulladal – 6 October 1946 in Stockholm ), was a Swedish politician, chairman of the Social Democrats from 1925 and two-time Prime Minister in four governments between 1932 and 1946, governing all that period save for a short-lived crisis in the summer of 1936, which he ended by forming a coalition government with his main adversary, Axel Pehrsson-Bramstorp.

During this period of legality, the UDA committed a large number of attacks using the name Ulster Freedom Fighters, including the assassination of Social Democratic and Labour Party ( SDLP ) politician Paddy Wilson in 1973.

David Martin Scott Steel, Baron Steel of Aikwood, KT, KBE, PC ( born 31 March 1938 ) is a British Liberal Democrat politician who served as the Leader of the Liberal Party from 1976 until its merger with the Social Democratic Party in 1988 to form the Liberal Democrats.

Karl Lueger (, not ; 24 October 1844 – 10 March 1910 ) was an Austrian politician, mayor of Vienna, and leader and cofounder the Austrian Christian Social Party.

When the war ended he became Finland's leading Social Democratic Party ( SDP ) politician, and a strong proponent of the parliamentary system.

Andrew Robert Buxton Cavendish, 11th Duke of Devonshire KG, MC, PC ( 2 January 1920 – 3 May 2004 ), styled Lord Andrew Cavendish until 1944 and Marquess of Hartington from 1944 to 1950, was a British Conservative and later Social Democratic Party politician.

Many were former Liberals ( PLI ), Republicans ( PRI ) and Social Democrats ( PSDI ): Alfredo Biondi ( President of Forza Italia's National Council ) and Raffaele Costa, both former PLI leaders, and former PSDI leader Carlo Vizzini were later MPs for Forza Italia.

They were basically former Socialists, as Fabrizio Cicchitto, Francesco Colucci, Maurizio Sacconi, Margherita Boniver, Giorgio Stracquadanio, Chiara Moroni and Stefania Craxi, or former Social Democrats, as Carlo Vizzini, Nicola Cosentino and Paolo Russo.

The former socialist and anti-fascist journalist Carlo Silvestri in 1924 was a harsh accuser of Mussolini ; later, when he joined Italian Social Republic, he affirmed that Mussolini showed him Matteotti Case's papers, and eventually he changed his mind.

Carlo Alberto Biggini ( December 9, 1902 – November 19, 1945 ) was an Italian Fascist politician who served as Minister of Education before and after proclamation of the Italian Social Republic under Benito Mussolini.

The 65 voting members included 27 Christian Democrats, 27 Social Democrats ( SPD ) led by Carlo Schmid, and five Liberals under Theodor Heuss.

Since opening, artists that have appeared on NJPAC's stages include the Boston Symphony Orchestra ; Yo-Yo Ma, Paul Simon, Bob Dylan, Diana Krall, Alvin Ailey American Dance Theater, Chicago Symphony Orchestra, Twyla Tharp Dance, Dance Theatre of Harlem, Israel Philharmonic, Nancy Wilson and Ramsey Lewis, Royal Danish Ballet, Hilary Hahn, Bill T. Jones, Itzhak Perlman, Sting, Les Ballets Trockadero de Monte Carlo, Elvis Costello, the National Song & Dance Company of Mozambique, the Afro-Cuban All-Stars, Audra McDonald, the Buena Vista Social Club, The Chieftains, Dulce Pontes, Alice Coltrane, Salt-N-Pepa, Gilberto Santa Rosa, Jerry Seinfeld, Kevin Hart, Christine Ebersole, Jennifer Hudson, Herbie Hancock, Sweet Honey in the Rock, Garrison Keillor, Maurizio Pollini, Gewandhaus Orchestra, Balé Folclorico da Bahia, Peter, Paul & Mary, Savion Glover, Aspen Santa Fe Ballet, Art Garfunkel, Kodo Drummers, Kirov Orchestra, Martha Graham Dance, Johnny Mathis, New Edition, Angelique Kidjo, Renee Fleming, and Evgeny Kissin.