CHUGOKU (Western Honshu: Hiroshima, Okayama, Shiname, Tottori and Yamaguchi prefectures)
HOKKAIDO (Hokkaido Island and prefecture)
HOKURIKUSHINETSU (North-central Honshu: Fukui, Ishikawa, Niigata, Nagano and Toyama prefectures)
KINKI (southern Honshu: Hyogo, Kyoto, Nara, Osaka, Shiga and Wakayama prefectures)
KITAKANTO (eastern Honshu: Gumma, Ibaraki, Saitama and Tochigi prefectures)
KYUSHU (Kyushu Island: Fukuoka, Kagashima, Kumamoto, Miyazaki, Nagasaki, Oita, Okinawa and Saga prefectures)
MINAMIKANTO (eastern Honshu: Chiba, Kanagawa and Saitama prefectures)
SHIKOKU (Shikoku Island: Ehime, Kagawa, Kochi and Tokushima prefectures)
TOHOKU (northern Honshu: Akita, Aomori, Fukushima, Iwate, Miyagi and Yamagata prefectures)
TOKAI (central Honshu: Aichi, Gifu, Mie and Shizuoka prefectures)
TOKYO (City of Tokyo: Tokyo prefecture)
| Clean Government Party | Democratic Party | Japan Communist Party | Liberal Democratic Party | Social Democratic Party | |
| TOTAL | 14.8% | 37.4% | 7.7% | 34.9% | 5.2% |
| CHUGOKU | 17.7% | 33.8% | 6.3% | 37.4% | 6.8% |
| HOKKAIDO | 14.0% | 40.8% | 9.0% | 31.0% | 5.2% |
| HOKURIKUSHINETSU | 10.1% | 36.9% | 7.2% | 38.9% | 6.9% |
| KINKI | 17.4% | 37.1% | 10.7% | 30.7% | 4.1% |
| KITAKANTO | 14.1% | 37.9% | 6.6% | 37.5% | 3.8% |
| KYUSHU | 16.9% | 31.4% | 6.3% | 36.5% | 8.8% |
| MINAMIKANTO | 13.7% | 40.0% | 7.4% | 34.6% | 4.3% |
| SHIKOKU | 16.7% | 31.7% | 8.0% | 38.2% | 5.3% |
| TOHOKU | 11.9% | 37.4% | 6.6% | 37.6% | 6.5% |
| TOKAI | 14.2% | 40.8% | 6.7% | 34.6% | 3.7% |
| TOKYO | 14.0% | 39.9% | 9.3% | 32.5% | 4.3% |
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