Tadatomo Yoshida


Tadatomo Yoshida (吉田 忠智, Yoshida Tadatomo, born 7 March 1956[citation needed] in Usuki, Ōita Prefecture[citation needed]) is a Japanese politician. He was first elected in 2010 House of Councillors election. He previously served as a prefectural assembly member in Ōita Prefecture.

Tadatomo Yoshida
吉田 忠智
Tadatomo Yoshida in SL Square in 2017.jpg
Tadatomo Yoshida, 2017
Chairman of the Social Democratic Party
In office
14 October 2013 – 25 February 2018
Preceded bySeiji Mataichi (acting)
Succeeded bySeiji Mataichi
Member of the House of Councillors
Assumed office
29 July 2019
Preceded bySeiji Mataichi
ConstituencyNational PR
In office
26 July 2010 – 25 July 2016
ConstituencyNational PR
Member of the Oita Prefectural Assembly
In office
2000 – April 2010
Personal details
Born (1956-03-07) 7 March 1956 (age 66)
Usuki, Ōita, Japan
Political partyCDP
Other political
SDP (until 2020)
Alma materKyushu University

He ran for the Chairmanship of the Social Democratic Party (SDP) and defeated Tokyo City Toshima Ward Councilor Taiga Ishikawa, the first openly gay SDP elected politician, by a vote of 9,986 to 2,239 to win the party election on 14 October 2013. He was inaugurated on 26 October 2013 as SDP party leader.[1]

After a disappointing result in the 2016 upper house election, he announced his resignation as head of the party.[2] He eventually retracted his resignation after the party urged for him not to resign.[3] Yoshida concluded his term as president on 25 February 2018.[4] Yoshida is planning to run again for elected office in the future.[5]

On 24 December 2020, Yoshida submitted a notice of withdrawal to the Social Democratic Party and a notice of admission to the Constitutional Democratic Party (CDP), both of which were accepted on the same day.[6]

External linksEdit


  1. ^ Qing, Shen (2013-10-14). "Tadatomo Yoshida elected as Japanese SDP's new leader". Xinhuanet. Retrieved 28 October 2013.
  2. ^ "SDP leader Yoshida to resign over Upper House election defeat". 14 July 2016.
  3. ^ SDP, September 5, 2016: 吉田忠智党首は続投
  4. ^ "社民、又市新党首を承認 立民軸の共闘推進" (in Japanese). Nihon Keizai Shimbun. 25 February 2018. Retrieved 27 February 2018.
  5. ^ Tadatomo Yoshida [@tadatomoyoshida] (26 February 2018). "昨日、4年4ヵ月にわたる社民党党首の任務を終えて、又市征治新党首に引き継ぎました。ご支援頂いた皆様に感謝申し上げます。今後は、国政の議席奪還に向けた活動に専念します。一層のご支援ご指導をお願いします。" (Tweet) – via Twitter.
  6. ^ "元社民幹部2人が立民に入党 国会議員153人に". 産経新聞. 2020-12-24. Retrieved 2020-12-24.
Party political offices
Preceded by Chair of the Social Democratic Party
14 October 2013 – 25 February 2018
Succeeded by