This article presents detailed results of the 2012 Japanese general election. The results are separated into each of the eleven proportional representation blocks and their corresponding prefectures. In the following tables, candidates elected via single-member district are highlighted in green, while candidates elected via proportional representation are highlighted in red.

Electoral system

The House of Representatives is elected via parallel voting. In the 2012 election, 300 members were elected in single-member districts and 180 via party-list proportional representation in eleven multi-member constituencies, referred to as "PR blocks". Single-member districts are apportioned between prefectures and numbered (1st, 2nd, etc). Candidates may run solely in a single-member district, solely in PR, or both (dual listing). Dual listed candidates must win at least 10% of the vote in their single-member district in order to be eligible for election via PR. Dual listed candidates who win their single-member district race are not eligible for election via PR.

Candidates on PR lists may be ranked sequentially or, if they are dual listed, ranked equally with one another. If ranked equally, the best-loser ratio (sekihairitsu) of each candidate determines the order of election. This number is determined by dividing their single-member district votes by those of the winning candidate in that district. In this way, the losing candidates who performed best will be elected first.

If a party wins more seats than they have eligible candidates in a PR block, their seats will be distributed to other parties in accordance with the PR formula.

Hokkaido block

+ Single-member constituency results in Hokkaido Constituency Previous member Elected member Votes % Margin Runner-up Party % Status Hokkaido 1st Takahiro Yokomichi DPJ LDP 86,034 31.1 6,040 Takahiro Yokomichi DPJ 28.9 LDP gain from DPJ Hokkaido 2nd Wakio Mitsui DPJ Takamori Yoshikawa LDP 83,575 35.0 28,055 Wakio Mitsui DPJ 23.2 LDP gain from DPJ Hokkaido 3rd Satoshi Arai DPJ Hirohisa Takagi LDP 88,360 36.9 23,761 Satoshi Arai DPJ 27.0 LDP gain from DPJ Hokkaido 4th Yoshio Hachiro DPJ Hiroyuki Nakamura LDP 79,588 44.2 26,371 Yoshio Hachiro DPJ 29.6 LDP gain from DPJ Hokkaido 5th Nobutaka Machimura LDP Nobutaka Machimura LDP 128,435 48.6 59,360 Shigeyuki Nakamae DPJ 26.1 LDP hold Hokkaido 6th Takahiro Sasaki DPJ Hiroshi Imazu LDP 103,064 42.9 33,792 Takahiro Sasaki DPJ 28.9 LDP gain from DPJ Hokkaido 7th Yoshitaka Itō LDP Yoshitaka Itō LDP 72,945 47.2 21,894 Takako Suzuki Daichi 33.1 LDP hold Hokkaido 8th Seiji Osaka DPJ LDP 107,937 47.5 30,535 Seiji Osaka DPJ 34.1 LDP gain from DPJ Hokkaido 9th Yukio Hatoyama DPJ Manabu Horii LDP 121,145 55.2 59,529 Tatsumaru Yamaoka DPJ 28.1 LDP gain from DPJ Hokkaido 10th Tadamasa Kodaira DPJ Hisashi Inatsu Komei 87,930 43.1 24,932 Tadamasa Kodaira DPJ 30.9 Komei gain from DPJ Hokkaido 11th Tomohiro Ishikawa Daichi Yūko Nakagawa LDP 86,719 51.0 16,607 Tomohiro Ishikawa Daichi 41.2 LDP gain from Daichi Hokkaido 12th Kenko Matsuki Daichi Arata Takebe LDP 91,208 50.3 38,232 Kenko Matsuki Daichi 29.2 LDP gain from Daichi

+Proportional representation results Party Votes Seats Rank Elected member Constituency Ratio LDP 692,304 (26.4%) 3 1 Kōichi Watanabe 13 14 DPJ 477,356 (18.2%) 2 1 Takahiro Yokomichi Hokkaido 1st 93.0% 1 Satoshi Arai Hokkaido 3rd 73.1% Daichi 346,848 (13.2%) 1 1 Tomohiro Ishikawa Hokkaido 11th 80.8% JRP 333,760 (12.7%) 1 1 Hokkaido 2nd 56.4% Komei 289,011 (11.0%) 1 1 Hidemichi Satō

Tohoku block

+ Single-member constituency results in Tohoku Constituency Previous member Elected member Votes % Margin Runner-up Party % Status Aomori 1st Hokuto Yokoyama TPJ Jun Tsushima LDP 73,237 40.6 25,837 JRP 26.2 LDP gain from TPJ Aomori 2nd Akinori Eto LDP Akinori Eto LDP 81,937 65.2 63,101 Tomonobu Nakamura DPJ 15.0 LDP hold Aomori 3rd Tadamori Ōshima LDP Tadamori Ōshima LDP 74,946 53.7 28,762 Masayo Tanabu DPJ 33.1 LDP hold Aomori 4th Tarō Kimura LDP Tarō Kimura LDP 104,544 66.5 69,403 DPJ 22.3 LDP hold Iwate 1st Takeshi Shina DPJ Takeshi Shina DPJ 55,909 34.7 11,907 LDP 27.3 DPJ hold Iwate 2nd TPJ Shun'ichi Suzuki LDP 96,523 56.5 32,828 Koji Hata TPJ 37.3 LDP gain from TPJ Iwate 3rd Toru Kikawada DPJ Toru Kikawada DPJ 62,684 41.5 19,145 Naomi Sato TPJ 28.8 DPJ hold Iwate 4th Ichirō Ozawa TPJ Ichirō Ozawa TPJ 78,057 45.5 30,170 Takashi Fujiwara LDP 27.9 TPJ hold Miyagi 1st Kazuko Kōri DPJ Tōru Doi LDP 87,482 39.2 26,566 Kazuko Kōri DPJ 27.3 LDP gain from DPJ Miyagi 2nd TPJ Kenya Akiba LDP 76,595 33.5 31,279 Masashi Nakano JRP 19.8 LDP gain from TPJ Miyagi 3rd DPJ Akihiro Nishimura LDP 88,801 58.2 41,503 Kiyohito Hashimoto DPJ 31.0 LDP gain from DPJ Miyagi 4th DPJ Shintaro Ito LDP 80,250 44.3 25,997 Keiki Ishiyama DPJ 29.9 LDP gain from DPJ Miyagi 5th Jun Azumi DPJ Jun Azumi DPJ 62,928 57.9 32,790 LDP 27.7 DPJ hold Miyagi 6th Itsunori Onodera LDP Itsunori Onodera LDP 97,405 78.1 76,444 Sayuri Kamata DPJ 16.8 LDP hold Akita 1st Manabu Terata DPJ Hiroyuki Togashi LDP 73,356 46.7 24,113 Manabu Terata DPJ 31.4 LDP gain from DPJ Akita 2nd DPJ Katsutoshi Kaneda LDP 91,747 51.5 34,355 Hiroshi Kawaguchi DPJ 32.2 LDP gain from DPJ Akita 3rd TPJ Nobuhide Minorikawa LDP 97,164 42.7 22,742 Toshihide Muraoka JRP 32.7 LDP gain from TPJ Yamagata 1st Michihiko Kano DPJ Toshiaki Endo LDP 102,169 54.6 31,758 Michihiko Kano DPJ 37.6 LDP gain from DPJ Yamagata 2nd Yōsuke Kondō DPJ Norikazu Suzuki LDP 100,744 46.1 18,912 Yōsuke Kondō DPJ 37.4 LDP gain from DPJ Yamagata 3rd Koichi Kato LDP Ind. 71,768 36.0 1,465 Koichi Kato LDP 35.2 Ind. gain from LDP Fukushima 1st TPJ Yoshitami Kameoka LDP 121,235 51.0 71,094 Yozaburo Ishihara TPJ 21.1 LDP gain from TPJ Fukushima 2nd Kazumi Ota TPJ Takumi Nemoto LDP 98,913 52.1 71,240 Kazunori Midorikawa JRP 14.6 LDP gain from TPJ Fukushima 3rd Kōichirō Genba DPJ Kōichirō Genba DPJ 107,737 62.3 58,941 LDP 28.2 DPJ hold Fukushima 4th Kōzō Watanabe DPJ Ichirō Kanke LDP 71,751 49.0 21,715 Shinji Oguma JRP 34.2 LDP gain from DPJ Fukushima 5th Izumi Yoshida DPJ Goji Sakamoto LDP 61,440 34.9 6,943 Izumi Yoshida DPJ 31.0 LDP gain from DPJ

+Proportional representation results Party Votes Seats Rank Elected member Constituency Ratio LDP 1,238,716 (28.6%) 5 1 Iwate 1st 78.7% 1 Takashi Fujiwara Iwate 4th 61.4% 1 Iwate 3rd 57.8% 1 Miyagi 5th 47.9% 1 Fukushima 3rd 45.3% DPJ 805,709 (18.6%) 3 1 Izumi Yoshida Fukushima 5th 88.7% 1 Yōsuke Kondō Yamagata 2nd 81.2% 1 Kazuko Kōri Miyagi 1st 69.6% JRP 725,006 (16.7%) 2 1 Shinji Oguma Fukushima 4th 69.7% 1 Toshihide Muraoka Akita 3rd 76.6% Komei 398,131 (9.2%) 1 1 Yoshihisa Inoue TPJ 391,216 (9.0%) 1 1 Iwate 2nd 66.0% YP 306,102 (7.1%) 1 1 Miyagi 1st 43.8% JCP 256,838 (5.9%) 1 1 Chizuko Takahashi

Northern Kanto block

+ Single-member constituency results in Northern Kanto Constituency Previous member Elected member Votes % Margin Runner-up % Status Ibaraki 1st Nobuyuki Fukushima DPJ Yoshinori Tadokoro LDP 103,463 45.3 37,387 Nobuyuki Fukushima DPJ 29.0 LDP gain from DPJ Ibaraki 2nd DPJ Fukushiro Nukaga LDP 113,891 56.3 65,969 Masao Ishizu DPJ 23.7 LDP gain from DPJ Ibaraki 3rd TPJ Yasuhiro Hanashi LDP 113,158 50.9 66,619 Toshiaki Koizumi TPJ 20.9 LDP gain from TPJ Ibaraki 4th Hiroshi Kajiyama LDP Hiroshi Kajiyama LDP 113,718 65.1 65,323 DPJ 27.7 LDP hold Ibaraki 5th Akihiro Ohata DPJ Akihiro Ohata DPJ 61,142 49.3 9,301 Akimasa Ishikawa LDP 41.8 DPJ hold Ibaraki 6th DPJ Yuya Niwa LDP 91,121 38.2 45,744 Ind. 19.0 LDP gain from DPJ Ibaraki 7th Kishirō Nakamura Ind. Kishirō Nakamura Ind. 81,157 42.7 21,552 Keiko Nagaoka LDP 31.4 Ind. hold Tochigi 1st DPJ Hajime Funada LDP 100,133 46.6 43,990 Hisatsugu Ishimori DPJ 26.1 LDP gain from DPJ Tochigi 2nd Akio Fukuda DPJ Koya Nishikawa LDP 55,853 38.6 9,582 Akio Fukuda DPJ 32.0 LDP gain from DPJ Tochigi 3rd Yoshimi Watanabe YP Yoshimi Watanabe YP 84,023 60.3 35,111 Kazuo Yana LDP 35.1 YP hold Tochigi 4th Kenji Yamaoka TPJ Tsutomu Sato LDP 109,762 51.1 60,741 YP 22.8 LDP gain from TPJ Tochigi 5th Toshimitsu Motegi LDP Toshimitsu Motegi LDP 101,533 67.3 62,907 YP 25.6 LDP hold Gunma 1st DPJ Genichiro Sata LDP 94,709 45.0 47,874 JRP 22.3 LDP gain from DPJ Gunma 2nd Takashi Ishizeki JRP Toshiro Ino LDP 87,309 49.6 35,469 Takashi Ishizeki JRP 29.4 LDP gain from JRP Gunma 3rd DPJ Hiroyoshi Sasagawa LDP 84,363 51.1 46,485 Masaaki Kakinuma DPJ 22.9 LDP gain from DPJ Gunma 4th Yasuo Fukuda LDP Tatsuo Fukuda LDP 93,220 55.7 50,684 Ayaka Miyaharada JRP 25.4 LDP hold Gunma 5th Yūko Obuchi LDP Yūko Obuchi LDP 134,685 77.3 112,082 Hitoshi Kobayashi SDP 13.0 LDP hold Saitama 1st Koichi Takemasa DPJ Hideki Murai LDP 96,242 39.7 19,659 Koichi Takemasa DPJ 31.6 LDP gain from DPJ Saitama 2nd DPJ Yoshitaka Shindō LDP 112,484 46.6 58,880 Yoshikazu Matsumoto YP 22.2 LDP gain from DPJ Saitama 3rd Ritsuo Hosokawa DPJ Hitoshi Kikawada LDP 87,695 35.5 29,105 Ritsuo Hosokawa DPJ 23.7 LDP gain from DPJ Saitama 4th Hideo Jinpu DPJ Mayuko Toyota LDP 71,061 35.9 17,695 Hideo Jinpu DPJ 27.0 LDP gain from DPJ Saitama 5th Yukio Edano DPJ Yukio Edano DPJ 93,585 45.4 9,465 Hideki Makihara LDP 40.8 DPJ hold Saitama 6th Atsushi Oshima DPJ Kazuyuki Nakane LDP 90,871 37.9 198 Atsushi Oshima DPJ 37.9 LDP gain from DPJ Saitama 7th Yasuko Komiyama TPJ LDP 78,505 35.0 34,077 JRP 19.8 LDP gain from TPJ Saitama 8th DPJ Masahiko Shibayama LDP 85,375 42.4 38,981 Masatoshi Onozuka DPJ 23.0 LDP gain from DPJ Saitama 9th DPJ Taku Otsuka LDP 109,062 47.2 59,081 Fumihiko Igarashi DPJ 21.6 LDP gain from DPJ Saitama 10th Tetsuhisa Matsuzaki TPJ Taimei Yamaguchi LDP 85,846 44.1 29,364 JRP 28.1 LDP gain from TPJ Saitama 11th Ryuji Koizumi Ind. Ryuji Koizumi Ind. 118,916 60.5 63,628 LDP 28.1 Ind. hold Saitama 12th Hiranao Honda DPJ Atsushi Nonaka LDP 65,989 32.0 10,326 Ind. 27.0 LDP gain from DPJ Saitama 13th DPJ Shinako Tsuchiya LDP 77,623 38.9 32,604 Yoichiro Morioka DPJ 22.6 LDP gain from DPJ Saitama 14th DPJ Hiromi Mitsubayashi LDP 84,263 37.9 12,314 JRP 32.4 LDP gain from DPJ Saitama 15th Satoshi Takayama DPJ Ryosei Tanaka LDP 88,210 42.7 39,063 Satoshi Takayama DPJ 23.8 LDP gain from DPJ

+Proportional representation results Party Votes Seats Rank Elected member Constituency Ratio LDP 1,820,116 (28.1%) 6 1 Hideki Makihara Saitama 5th 89.9% 1 Akimasa Ishikawa Ibaraki 5th 84.8% 1 Keiko Nagaoka Ibaraki 7th 73.4% 1 Kazuo Yana Tochigi 3rd 58.2% 1 Saitama 11th 46.5% 33 Masayoshi Shintani JRP 1,169,781 (18.1%) 4 1 Gunma 1st 49.5% 2 Takashi Ishizeki Gunma 2nd 59.4% 3 Saitama 14th 85.4% 3 Saitama 10th 65.8% DPJ 976,922 (15.1%) 3 1 Atsushi Oshima Saitama 6th 99.8% 1 Akio Fukuda Tochigi 2nd 82.8% 1 Koichi Takemasa Saitama 1st 79.6% Komei 820,358 (12.7%) 3 1 Keiichi Ishii 2 Mitsunari Okamoto 3 Keiichi Koshimizu YP 787,462 (12.2%) 2 1 Koichi Yamauchi 2 Tochigi 2nd 68.2% TPJ 387,625 (6.0%) 1 1 Yasuko Komiyama Saitama 7th 56.6% JCP 367,245 (5.7%) 1 1 Tetsuya Shiokawa

Southern Kanto block