June 2010 | Minister of Finance (Kan Cabinet) |
September 2009 | Senior Vice Minister of Finance (Hatoyama Cabinet) |
May 2009 | Acting Secretary General, DPJ |
August 2007 | Chairman of the Public Relations Committee, DPJ |
September 2005 | Chairman of the Diet Affairs Committee, DPJ |
September 2004 | Next Minister of Finance in the Next (Shadow) Cabinet, DPJ |
December 2002 | Chairman of the Diet Affairs Committee, DPJ |
September 2002 | Candidate in the DPJ's presidential election |
September 2001 | Next Minister for Administrative Reform in the Next (Shadow) Cabinet of DPJ |
July 1993 | Elected as a Member of the House of Representatives (1st) |
April 1987 | Elected as a Member of the Chiba Prefectural Assembly (1st) |