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 | Japan Communist Party | Democratic Party | Liberal Party | Liberal Democratic Party | Social Democratic Party | |
| TOTAL | 13.1% | 11.3% | 25.5% | 9.9% | 28.7% | 9.4% |
| CHUGOKU | 15.3% | 8.9% | 21.8% | 8.9% | 35.6% | 9.2% |
| HOKKAIDO | 12.8% | 12.7% | 31.4% | 8.1% | 25.6% | 8.8% |
| HOKURIKUSHINETSU | 8.8% | 9.2% | 25.3% | 11.1% | 34.9% | 10.4% |
| KINKI | 16.0% | 15.8% | 23.4% | 9.5% | 23.8% | 9.0% |
| KITAKANTO | 12.6% | 10.6% | 24.8% | 12.4% | 30.9% | 8.1% |
| KYUSHU | 14.4% | 8.2% | 20.3% | 9.3% | 31.5% | 13.2% |
| MINAMIKANTO | 12.4% | 11.5% | 27.7% | 12.0% | 24.7% | 9.6% |
| SHIKOKU | 13.7% | 11.0% | 20.7% | 8.4% | 36.0% | 10.1% |
| TOHOKU | 9.8% | 8.1% | 21.2% | 16.3% | 32.0% | 10.7% |
| TOKAI | 11.7% | 10.0% | 30.7% | 9.7% | 28.5% | 7.4% |
| TOKYO | 12.9% | 14.5% | 29.0% | 13.6% | 19.5% | 6.6% |
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