# Aichi at-large district

The Aichi at-large district is a constituency of the House of Councillors in the Diet of Japan that represents Aichi Prefecture. From 1947 until 2013 it has elected six Councillors, three every three years by single non-transferable vote (SNTV) for six-year terms. A 2015 revision of the Public Officers Election Law increased the district's representation to eight Councillors; the change began to take effect at the 2016 election, at which four Councillors were elected.

## Elected Councillors

| Class of (1947/1953/...) | Class of (1947/1953/...) | Class of (1947/1953/...) | Class of (1947/1953/...) | Election Year | Class of (1950/1956/...) | Class of (1950/1956/...) | Class of (1950/1956/...) | Class of (1950/1956/...) |
| #1 1947: #1, 6 Year Term | #2 1947: #2, 6 Year Term 1975: #1, 2 Year Term | #3 1947: #3, 6 Year Term | #4 | Election Year | #1 1947: #4, 3 Year Term 1990: #1, 2 Year Term | #2 1947: #5, 3 Year Term 1966: #1, 2 Year Term 1994: #1, 1 Year Term | #3 1947: #6, 3 Year Term | #4 |
| Takurō Yamanouchi (Indep.) | Saichi Yamada (JLP) | Shichirō Takenaka (Indep.) | | 1947 | Ushirō Saeki (Indep.) | Ryōen Kusaba (JLP) | Yoshio Kuriyama (Indep.) | |
| Takurō Yamanouchi (Indep.) | Saichi Yamada (JLP) | Shichirō Takenaka (Indep.) | | 1950 | Banji Naruse (JSP) | Ryōen Kusaba (LP) | Yoneji Yamamoto (LP) | |
| Hiroko Hasebe (Indep.) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LP) | | 1953 | Banji Naruse (JSP) | Ryōen Kusaba (LP) | Yoneji Yamamoto (LP) | |
| Hiroko Hasebe (Indep.) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LP) | | 1956 | Banji Naruse (JSP) | Ryōen Kusaba † 1966 (LDP) | Yoneji Yamamoto (LDP) | |
| Takeo Sugiura (LDP) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LDP) | | 1959 | Banji Naruse (JSP) | Ryōen Kusaba † 1966 (LDP) | Yoneji Yamamoto (LDP) | |
| Takeo Sugiura (LDP) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LDP) | | 1962 | Banji Naruse (JSP) | Ryōen Kusaba † 1966 (LDP) | Sakae Shibata (LDP) | |
| Ichiro Yagi (LDP) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LDP) | | 1963 by-el. | Banji Naruse (JSP) | Ryōen Kusaba † 1966 (LDP) | Sakae Shibata (LDP) | |
| Ichiro Yagi (LDP) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LDP) | | 1965 | Banji Naruse (JSP) | Ryōen Kusaba † 1966 (LDP) | Sakae Shibata (LDP) | |
| Ichiro Yagi (LDP) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LDP) | | 1966 by-el. | Banji Naruse (JSP) | Taro Yokoi (LDP) | Sakae Shibata (LDP) | |
| Ichiro Yagi (LDP) | Shinichi Kondō (Left, JSP) | Hideo Aoyagi (LDP) | | 1968 | Banji Naruse (JSP) | Kunihiko Shibuya (Kōmeitō) | Sakae Shibata (LDP) | |
| Ichiro Yagi (LDP) | Shoji Suhara † 1975 (JSP) | Shigezo Hashimoto (LDP) | | 1971 | Banji Naruse (JSP) | Kunihiko Shibuya (Kōmeitō) | Sakae Shibata (LDP) | |
| Ichiro Yagi (LDP) | Shoji Suhara † 1975 (JSP) | Shigezo Hashimoto (LDP) | | 1974 | Shoji Morishita (JSP) | Shigenobu Sanji # 1994 (DSP) | Isshu Fujikawa (LDP) | |
| Ichiro Yagi (LDP) | Isamu Fukui (LDP) | Shigezo Hashimoto (LDP) | | 1975 by-el. | Shoji Morishita (JSP) | Shigenobu Sanji # 1994 (DSP) | Isshu Fujikawa (LDP) | |
| Ichiro Yagi (LDP) | Tomi Baba (Komeito) | Kei Inoue (DSP) | | 1977 | Shoji Morishita (JSP) | Shigenobu Sanji # 1994 (DSP) | Isshu Fujikawa (LDP) | |
| Ichiro Yagi (LDP) | Tomi Baba (Komeito) | Kei Inoue (DSP) | | 1980 | Kentaro Takagi † 1990 (Indep.) | Shigenobu Sanji # 1994 (DSP) | Hiroshi Ogi (LDP) | |
| Hiroshi Yoshikawa (LDP) | Tomi Baba (Komeito) | Kei Inoue (DSP) | | 1983 | Kentaro Takagi † 1990 (Indep.) | Shigenobu Sanji # 1994 (DSP) | Hiroshi Ogi (LDP) | |
| Hiroshi Yoshikawa (LDP) | Tomi Baba (Komeito) | Kei Inoue (DSP) | | 1986 | Kentaro Takagi † 1990 (Indep.) | Shigenobu Sanji # 1994 (DSP) | Hiroshi Ogi (LDP) | |
| Hiroshi Yoshikawa (LDP) | Kei Inoue (DSP) | Sachiko Maehata (JSP) | | 1989 | Kentaro Takagi † 1990 (Indep.) | Shigenobu Sanji # 1994 (DSP) | Hiroshi Ogi (LDP) | |
| Hiroshi Yoshikawa (LDP) | Kei Inoue (DSP) | Sachiko Maehata (JSP) | | 1990 by-el. | Yoshihisa Oshima (LDP) | Shigenobu Sanji # 1994 (DSP) | Hiroshi Ogi (LDP) | |
| Hiroshi Yoshikawa (LDP) | Kei Inoue (DSP) | Sachiko Maehata (JSP) | | 1992 | Kiyohiro Araki (Kōmeitō) | Shoji Shinma # 1994 (DSP) | Hiroshi Ogi (LDP) | |
| Hiroshi Yoshikawa (LDP) | Kei Inoue (DSP) | Sachiko Maehata (JSP) | | 1994 by-el. | Kiyohiro Araki (Kōmeitō) | Yuzuru Tsutugi (Indep.) | Hiroshi Ogi (LDP) | |
| Seiji Suzuki (LDP) | Mahiko Suehiro (Indep.) | Tamotsu Yamamoto (NFP) | | 1995 | Kiyohiro Araki (Kōmeitō) | Yuzuru Tsutugi (Indep.) | Hiroshi Ogi (LDP) | |
| Seiji Suzuki (LDP) | Mahiko Suehiro (Indep.) | Tamotsu Yamamoto (NFP) | | 1998 | Yoshitake Kimata (DPJ) | Taisuke Sato (DPJ) | Hiroko Hatta (JSP) | |
| Seiji Suzuki (LDP) | Kohei Otsuka (DPJ) | Tamotsu Yamamoto (Komeito) | | 2001 | Yoshitake Kimata (DPJ) | Taisuke Sato (DPJ) | Hiroko Hatta (JSP) | |
| Seiji Suzuki (LDP) | Kohei Otsuka (DPJ) | Tamotsu Yamamoto (Komeito) | | 2004 | Yoshitake Kimata (DPJ) | Taisuke Sato (DPJ) | Katsuhito Asano (LDP) | |
| Seiji Suzuki (LDP) | Kohei Otsuka (DPJ) | Kuniko Tanioka (DPJ) | | 2007 | Yoshitake Kimata (DPJ) | Taisuke Sato (DPJ) | Katsuhito Asano (LDP) | |
| Seiji Suzuki (LDP) | Kohei Otsuka (DPJ) | Kuniko Tanioka (DPJ) | | 2010 | Yoshitaka Saitō (DPJ) | Misako Yasui (DPJ) | Masahito Fujikawa (LDP) | |
| Yasuyuki Sakai (LDP) | Kohei Otsuka (DPJ) | Michiyo Yakushiji (Your Party) | | 2013 | Yoshitaka Saitō (DPJ) | Misako Yasui (DPJ) | Masahito Fujikawa (LDP) | |
| Yasuyuki Sakai (LDP) | Kohei Otsuka (DPJ) | Michiyo Yakushiji (Your Party) | | 2016 | Masahito Fujikawa (LDP) | Yoshitaka Saitō (DP) | Ryuji Satomi (Komeito) | Takae Itō (LDP) |
| Yasuyuki Sakai (LDP) | Kohei Otsuka (DPJ) | Maiko Tajima (CDP) | Nobuo Yasue (Komeito) | 2019 | Masahito Fujikawa (LDP) | Yoshitaka Saitō (DP) | Ryuji Satomi (Komeito) | Takae Itō (LDP) |
| Yasuyuki Sakai (LDP) | Kohei Otsuka (DPJ) | Maiko Tajima (CDP) | Nobuo Yasue (Komeito) | 2022 | Masahito Fujikawa (LDP) | Ryuji Satomi (Komeito) | Yoshitaka Saitō (CDP) | Takae Itō (LDP) |
Party affiliations as of election day; #: resigned; †: died in office.

## Previous election results

2019 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yasuyuki Sakai (Incumbent) | 737,717 | 25.74% | |
| | Democratic Party for the People | Kohei Otsuka (Incumbent) | 506,817 | 17.69% | |
| | CDP | Maiko Tajima | 461,531 | 16.10% | |
| | Komeito | Nobuo Yasue (Endorsed by Liberal Democratic Party) | 453,246 | 15.82% | |
| | Ishin | Maki Misaki | 269,081 | 9.39% | |
| | JCP | Hatsumi Suyama | 216,674 | 7.56% | |
| | The Party to Protect the People from NHK | Yukari Suenaga | 85,262 | 2.98% | |
| | Social Democratic | Ryohei Hirayama | 43,756 | 1.53% | |
| | Independent | Kin Ishii | 32,142 | 1.12% | |
| | Shijinashi | Hiroyuki Ushida | 25,219 | 0.88% | |
| | Workers' Party | Hitoshi Furukawa | 17,905 | 0.62% | |
| | Tsubasa Party | Ben Hashimoto | 16,425 | 0.57% | |
| Turnout | Turnout | Turnout | 6,119,143 | 48.18% | −7.23% |
2016 :
| Party | Party | Candidate | Votes | % |
| | LDP | Masahito Fujikawa (Incumbent) | 961,096 | 29.3 |
| | Democratic | Yoshitaka Saito (Incumbent) | 575,119 | 17.5 |
| | Komeito | Ryuji Satomi (Endorsed by Liberal Democratic Party) | 531,488 | 16.2 |
| | Democratic | Takae Ito | 519,510 | 15.8 |
| | JCP | Hatsumi Suyama | 302,489 | 9.2 |
| | Genzei Nippon | Kayo Okuda | 218,171 | 6.7 |
| | Social Democratic | Ryohei Hirayama | 64,781 | 2.0 |
| | Japanese Kokoro | Makoto Igeta | 59,651 | 1.8 |
| | Happiness Realization | Hiromi Nakane | 47,088 | 1.4 |
| Turnout | Turnout | Turnout | | |
2013 :
| Party | Party | Candidate | Votes | % |
| | LDP | Yasuyuki Sakai | 1,056,145 | 35.4 |
| | Democratic | Kōhei Ōtsuka (Incumbent) | 741,598 | 24.9 |
| | Your | Michiyo Yakushiji | 347,411 | 11.6 |
| | JCP | Nobuko Motomura | 271,278 | 9.1 |
| | Restoration | Hiroshi Kondō | 263,918 | 8.5 |
| | Genzei Nippon | Yukio Uta | 152,038 | 5.1 |
| | Green Wind | Makoto Hirayama (Incumbent) | 62,985 | 2.1 |
| | Social Democratic | Yoshinori Itō | 47,104 | 1.6 |
| | Happiness Realization | Hiromi Nakane | 30,199 | 1.0 |
| | Mitamayama | Sōsaburo Mitamayama | 11,277 | 0.4 |
| Turnout | Turnout | Turnout | 3,099,258 | 52.65 |
2010 :
| Party | Party | Candidate | Votes | % |
| | LDP | Masahito Fujikawa | 918,187 | |
| | Democratic | Yoshitaka Saitō | 750,723 | |
| | Democratic | Misako Yasui | 676,681 | |
| | Your | Michiyo Yakushiji | 529,130 | |
| | JCP | Nobuko Motomura | 193,710 | |
| | Social Democratic | Mitsuko Aoyama | 102,989 | |
| | Happiness Realization | Hiromi Nakane | 37,338 | |
| Turnout | Turnout | Turnout | 3,349,983 | 57.46 |
2007 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Kōhei Ōtsuka (Incumbent) | 880,856 | |
| | LDP | Seiji Suzuki (Incumbent) | 734,153 | |
| | Democratic | Kuniko Tanioka | 720,777 | |
| | Komeito | Tamotsu Yamamoto (Incumbent) | 587,268 | |
| | JCP | Hiroko Hatta | 293,607 | |
| | Social Democratic | Ryōhei Hirayama | 69,853 | |
| | Independent | Takashi Hyōdō | 22,273 | |
| | Ishin Seitō Shinpū | Masaji Tsuge | 13,301 | |
| | Kyōsei Shintō | Kōtarō Arakawa | 12,435 | |
| Turnout | Turnout | Turnout | 3,397,619 | 59.12 |