The also referred to in Japanese by the shortened , was a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese political party that existed from 1978 to 1994. It was formed from the merger of the and the .

Socialist Citizen Federation(SCF)

In 1977, Hideo Den

Hideo Den

Hideo Den was a Japanese news presenter, politician, and for 34 of the years between 1971 and 2007, a member of the House of Councillors for the Social Democratic Party. From 1978 to 1985, he was also the president of the Socialist Democratic Federation.He was the grandson of Den...

, Yutaka Hara and Yanosuke Narazaki defected from the SDP and formed the Shakai Club party.

In 1993, Satsuki Eda

Satsuki Eda

is the first Opposition member to serve as the President of the House of Councillors in Japan. Eda had served for three terms in the House of Councillors before his election as President on August 7, 2007 after the success of the Democratic Party in the July 2007 election for the Japanese House of...

 was head of the Science and Technology Agency in Morihiro Hosokawa

Morihiro Hosokawa

is a Japanese politician who was the 79th Prime Minister of Japan from August 9, 1993 to April 28, 1994. His coalition was the first non-Liberal Democratic Party government since 1955.- Early life :...

's cabinet

Cabinet of Japan

The of Japan is the executive branch of the government of Japan. It consists of the Prime Minister and up to fourteen other members, called Ministers of State. The Prime Minister is designated by the Diet, and the remaining ministers are appointed and dismissed by the Prime Minister...

.

List of presidents of the Socialist Democratic Federation(SDF)

• Hideo Den
  Hideo Den
  Hideo Den was a Japanese news presenter, politician, and for 34 of the years between 1971 and 2007, a member of the House of Councillors for the Social Democratic Party. From 1978 to 1985, he was also the president of the Socialist Democratic Federation.He was the grandson of Den...
  
   (March 1978 - February 1985)
• Satsuki Eda
  Satsuki Eda
  is the first Opposition member to serve as the President of the House of Councillors in Japan. Eda had served for three terms in the House of Councillors before his election as President on August 7, 2007 after the success of the Democratic Party in the July 2007 election for the Japanese House of...
  
   (February 1985 - May 1994)

See also

• Naoto Kan
  Naoto Kan
  is a Japanese politician, and former Prime Minister of Japan. In June 2010, then-Finance Minister Kan was elected as the leader of the Democratic Party of Japan and designated Prime Minister by the Diet to succeed Yukio Hatoyama. On 26 August 2011, Kan announced his resignation...
  
  
• Japan New Party
  Japan New Party
  The Japan New Party was a Japanese political party that existed briefly from 1992 to 1994. It should not be confused with the New Party Nippon founded in 2005....
  
  
• New Party Sakigake
  New Party Sakigake
  The New Party Sakigake was a Japanese political party that broke away from the Liberal Democratic Party on June 22, 1993. The party was created by Masayoshi Takemura. The party, was a centrist party, and it had many reformist and even moderate ecological elements. The theoretical reader was...
  
  
• New Frontier Party
  New Frontier Party
  The was a Japanese political party that existed during the mid-1990s. As a merger of several small parties, the party was ideologically diverse, with its membership ranging from moderate socialists to neoliberals and conservatives...
  
  
• Democratic Party of Japan
  Democratic Party of Japan
  The is a political party in Japan founded in 1998 by the merger of several opposition parties. Its socially liberal platform is generally considered center-left in the Japanese political spectrum...