
DietCriticalCurrently serving
前原 誠司
まえはら せいじ
MAEHARA Seiji
衆議院議員Member of the House of Representatives
維新衆議院· House of Representatives京都2· Kyoto 2nd District日本維新の会· Nippon Ishin (Japan Innovation Party)12 terms
Born 1962-04-30 · 京都府京都市左京区 (Sakyo-ku, Kyoto City, Kyoto Prefecture)
Policy issues
Career & history
Government Posts
- Appointed Minister of State for National Policy, and Minister of State for Economic and Fiscal Policy, Science and Technology Policy, Nuclear Power Policy, and Space Policy on October 1, 2012 (Third Reshuffled Noda Cabinet).
- Resigned as Minister for Foreign Affairs on March 6, 2011.
- Re-appointed Minister for Foreign Affairs on January 14, 2011 (Second Reshuffled Kan Cabinet).
- Assumed office as the 139th Minister for Foreign Affairs on September 17, 2010 (First Reshuffled Kan Cabinet).
- Re-appointed Minister of Land, Infrastructure, Transport and Tourism, and Minister of State for Okinawa and Northern Territories Affairs on June 8, 2010 (Kan Cabinet).
- Relieved of the post of Minister of State for Disaster Management on January 12, 2010.
- Appointed Minister of Land, Infrastructure, Transport and Tourism, and Minister of State for Okinawa and Northern Territories Affairs, and Disaster Management on September 16, 2009 (Hatoyama Cabinet).
Party Posts
- Appointed Advisor of the Japan Innovation Party on August 12, 2025.
- Appointed Co-President of the Japan Innovation Party on December 2, 2024.
- Joined the Japan Innovation Party on October 10, 2024, and was appointed Vice President of its Diet Members' Group.
- Expelled from the Democratic Party for the People on December 13, 2023.
- Submitted a letter of resignation to the DPP and formed 'Free Education for All' on November 30, 2023, assuming the role of President.
- Appointed Election Strategy Committee Chairman of the DPP on December 21, 2021 (until August 2022).
- Appointed Deputy President of the (New) Democratic Party for the People on September 15, 2020.
- Participated in the founding of the Democratic Party for the People on May 7, 2018.
- Joined the Party of Hope on November 14, 2017.
- Resigned as President of the Democratic Party on October 30, 2017.
- Assumed office as the 3rd President of the Democratic Party (Minshinto) on September 1, 2017.
- Participated in the founding of the Democratic Party (Minshinto) in March 2016.
- Appointed Chairman of the Comprehensive Research Council for Administrative and Fiscal Reform of the Democratic Party of Japan in September 2013.
- Appointed Chairman of the intra-party group 'Ryun-kai' on November 10, 2011.
- Appointed Chairman of the Policy Research Committee of the Democratic Party of Japan on August 31, 2011 (until September 2012).
- Appointed Chairman of the Constitution Research Committee of the Democratic Party of Japan on May 10, 2011.
- Appointed Vice President of the Democratic Party of Japan on August 31, 2007.
- Resigned as President of the Democratic Party of Japan on April 7, 2006, following the Horie email scandal.
- Assumed office as the 5th President of the Democratic Party of Japan on September 17, 2005.
- Appointed Next Director-General of the Defense Agency in the DPJ's 'Next Cabinet' in September 2004.
- Appointed Next Foreign Minister in the DPJ's 'Next Cabinet' in December 2003.
- Appointed Next Minister for Security in the DPJ's 'Next Cabinet' in December 2002.
- Appointed Deputy Secretary-General of the Democratic Party of Japan in September 2001.
- Appointed Next Minister for Land, Infrastructure and Transport in the DPJ's 'Next Cabinet' in October 1999.
- Appointed President of the Kyoto Prefectural Federation of the Democratic Party of Japan in November 1998 (until November 2002).
- Appointed Deputy Chairman of the Diet Affairs Committee of the Democratic Party of Japan in September 1997.
- Participated in the founding of the (Old) Democratic Party of Japan in September 1996.
- Appointed Vice Chairman of the Policy Research Council of the New Party Sakigake in July 1995.
- Left the Japan New Party to form 'Minshu no Kaze' before joining the New Party Sakigake in 1994.
Committee Chairs
- Appointed Chairman of the Security Committee of the House of Representatives on October 21, 2025.
- Appointed Chairman of the Judge Impeachment Committee on May 26, 2011.
Professional Career
- Elected for the first time as a Member of the Kyoto Prefectural Assembly (representing Sakyo-ku) in April 1991.
- Entered the Matsushita Institute of Government and Management in April 1987 (8th Class).
Education
- Graduated from the Faculty of Law, Kyoto University in March 1987.
- Entered the Faculty of Law, Kyoto University in April 1982, specializing in International Politics under Professor Masataka Kosaka.
- Graduated from Kyoto University of Education Junior High and High School in March 1981.
Publications
- Published 'Divided Society Japan' from Asahi Shimbun Publications on January 13, 2016.
- Published 'The Ordeal of Power Change: Beyond Populist Politics' from Shinchosha on December 1, 2012.
- Published 'This is the Breakthrough for Japan's Growth! MLIT Growth Strategy' from Taisei Shuppansha on June 25, 2010.
- Published 'Local Sovereignty to Revitalize Japan' from PHP Institute in 2008.
- Co-authored 'Concentrated Lectures by Shigeru Ishiba, Seiji Maehara, and Others! Japan's Defense: 7 Points of Debate' published by Takarajimasha in 2005.
Other
- Elected for a twelfth term in the 51st general election on February 8, 2026.
- Guest starred on BS NTV's 'Kensaku Morita Hour: Jinsei Kensaku Mado' on October 11, 2025.
- Elected for an eleventh term in the 50th general election on October 27, 2024.
- Appeared in the movie 'Senkyonandes' released on February 18, 2023.
- Elected for a tenth term in the 49th general election on October 31, 2021.
- Elected for a ninth term in the 48th general election on October 22, 2017 (as an Independent).
- Elected for an eighth term in the 47th general election on December 14, 2014.
- Elected for a seventh term in the 46th general election on December 16, 2012.
- Elected for a sixth term in the 45th general election on August 30, 2009.
- Elected for a fifth term in the 44th general election on September 11, 2005.
- Elected for a fourth term in the 43rd general election on November 9, 2003.
- Elected for a third term in the 42nd general election on June 25, 2000.
- Elected for a second term in the 41st general election on October 20, 1996 (representing Kyoto 2nd district, Democratic Party of Japan, via proportional representation block).
- Elected for the first time as a Member of the House of Representatives in the 40th general election on July 18, 1993 (representing the former Kyoto 1st district as a Japan New Party candidate).
- Born on April 30, 1962, in Sakyo-ku, Kyoto City, Kyoto Prefecture.
Elections
Committee memberships
Offices
Diet Office
- Room
- 809
- Phone
- 03-3508-7171
- Fax
- 03-3592-6696
衆議院第一議員会館
衆議院第一議員会館
京都事務所
- Phone
- 075-723-2751
京都府京都市左京区山端壱町田町8-46
8-46 Yamabata Ichimachidamachi, Sakyo-ku, Kyoto-shi, Kyoto