| 1986 | Elected to the House of Representatives |
| 1991 | Parliamentary Vice Minister of Okinawa Development |
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| 1995 | Elected to the House of Councilors |
| 1998 | Chairman, Home affairs Divisions |
| 1998 | Chief Deputy Chairman, Diet Affairs Committee, the LDP Members of the House of Councilors |
| 1999 | Deputy Secretary General, LDP |
| 1999 | Chief Deputy Secretary-General, the LDP Members of the House of Councilors |
| 1999 | Acting Chairman, Party Organization Headquarters, LDP |
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| 2000 | Chairman, Diet Affairs Committee, the LDP Members of the House of Councilors |
| 2002 | Chairman, Diet Affairs Committee, the LDP Members of the House of Councilors |
| 2002 | Minister of State for Disaster Management
Minister of State for Special Zones for Structural Reform |
