| Date of Birth: |
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Born in Yamanashi Prefecture on May 14, 1936 |
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| Education: |
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Graduated from the Faculty of Education, Tsuru Junior College (now Tsuru University) |
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| Career: |
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| April 1958 |
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Elementary school teacher, Kanagawa Prefecture |
| April 1963 |
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Elementary school teacher, Yamanashi Prefecture |
| April 1984 |
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Chair, Executive Committee, Yamanashi Prefecture Teachers Union |
| Nov 1986 |
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President, Rengo Yamanashi |
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Political Career: |
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| Feb 1990 |
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Elected as a member of the House of Representatives (served two terms) |
| July 1998 |
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Elected as a member of the House of Councillors |
| July 2001 |
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Chair, Diet Affairs Committee, DPJ Caucus in the House of Councillors |
| July 2004 |
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Re-elected to the House of Councillors for the 2nd time
Secretary General, DPJ Caucus in the House of Councillors |
| June 2006 |
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Chair, DPJ Caucus in the House of Councillors |
| Aug 2007 |
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Acting President, DPJ |
| Oct 2009 |
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Acting Secretary General, DPJ |
| July 2010 |
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Re-elected to the House of Councillors for the 3rd time |
| Aug 2011 |
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Secretary General, DPJ |
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