# Miyagi at-large district

The Miyagi at-large district (Japanese: 宮城県選挙区, Hepburn: Miyagi-ken senkyoku) is a multi-member constituency that represents Miyagi Prefecture in the House of Councillors in the Diet of Japan. It currently has two Councillors in the 242-member house, but this representation will decrease to two at the next election, to be held by July 2019.

## Outline

The constituency represents the entire population of Miyagi Prefecture including the urban centre of Sendai. From the first House of Councillors election in 1947 until the 1992 election, Miyagi elected two Councillors to six-year terms, one at alternating elections held every three years. Under 1994 electoral reform Miyagi's representation was increased to four (two sets of two) from the 1995 election.
The district had 1,907,518 registered voters as of September 2015, the second-lowest of the 10 prefectures that were represented by four Councillors at that time. By comparison, the Hokkaido, Hyogo at-large district and Fukuoka districts each had more than 4 million voters but were limited to the same number of Councillors as Miyagi. To address this malapportionment in representation, a 2015 revision of the Public Officers Election Law decreased the representation of Miyagi, Niigata and Nagano districts to two Councillors while increasing Hyogo, Hokkaido and Fukuoka districts to six Councillors; this change began to take effect at the 2016 election, at which time Miyagi elected only one Councillor, and was completed at the 2019 election when again, Miyagi only elected one Councillor. The district has been somewhat favorable to the opposition for the majority of its existence; it was briefly represented by two opposition members from 2019 to 2020, before Sakurai switched to the LDP. The CDP also defeated an incumbent LDP Councilor, Jiro Aichi, here in 2019.
The Councillors currently representing Miyagi are:
* Noriko Ishigaki (Constitutional Democratic Party of Japan (CDP), first term; term ends in 2025)
* Mitsuru Sakurai (Liberal Democratic Party, fifth term; term ends in 2028)

## Elected Councillors

| class of 1947 | class of 1947 | election year | class of 1950 | class of 1950 |
| #1 (1947: 6-year term) | #2 (established 1995) | election year | #1 (1947: 3-year term) | #2 (established 1998) |
| Takeo Sai [ja] (Social Democratic) | - | 1947 | Kei Takahashi (Democratic) | - |
| Takeo Sai [ja] (Social Democratic) | - | 1950 | Shintaro Takahashi [ja] (Liberal) | - |
| Shinji Yoshino (Liberal) | - | 1953 | Shintaro Takahashi [ja] (Liberal) | - |
| Shinji Yoshino (Liberal) | - | 1956 | Shintaro Takahashi (LDP) | - |
| Hisayoshi Muramatsu (LDP) | - | 1959 | Shintaro Takahashi (LDP) | - |
| Hisayoshi Muramatsu (LDP) | - | 1962 | Shintaro Takahashi (LDP) | - |
| Hisayoshi Muramatsu (LDP) | - | 1965 by-election | Bungoro Takahashi [ja] (LDP) | - |
| Kikuo Toda [ja] (Social Democratic) | - | 1965 | Bungoro Takahashi [ja] (LDP) | - |
| Kikuo Toda [ja] (Social Democratic) | - | 1968 | Bungoro Takahashi [ja] (LDP) | - |
| Kikuo Toda [ja] (Social Democratic) | - | 1971 | Bungoro Takahashi [ja] (LDP) | - |
| Kikuo Toda [ja] (Social Democratic) | - | 1974 | Kaname Endo [ja] (LDP) | - |
| Buichi Oishi [ja] (LDP) | - | 1977 | Kaname Endo [ja] (LDP) | - |
| Buichi Oishi [ja] (LDP) | - | 1980 | Kaname Endo [ja] (LDP) | - |
| Choji Hoshi [ja] (LDP) | - | 1983 | Kaname Endo [ja] (LDP) | - |
| Choji Hoshi [ja] (LDP) | - | 1986 | Kaname Endo [ja] (LDP) | - |
| Kazuo Kurimura [ja] (Social Democratic) | - | 1989 | Kaname Endo [ja] (LDP) | - |
| Koki Hagino [ja] (Rengō no Kai [ja]) | - | 1992 by-election | Kaname Endo [ja] (LDP) | - |
| Koki Hagino [ja] (Rengō no Kai [ja]) | - | 1992 | Kaname Endo [ja] (LDP) | - |
| Ichiro Ichikawa (Ind.) | Hiroaki Kameya [ja] (LDP) | 1995 | Kaname Endo [ja] (LDP) | - |
| Tomiko Okazaki (DPJ) | Hiroaki Kameya [ja] (LDP) | 1997 by-election | Kaname Endo [ja] (LDP) | - |
| Tomiko Okazaki (DPJ) | Hiroaki Kameya [ja] (LDP) | 1998 | Mitsuru Sakurai (DPJ) | Ichiro Ichikawa (Ind.) |
| Tomiko Okazaki (DPJ) | Jiro Aichi (Ind.) | 2001 | Mitsuru Sakurai (DPJ) | Ichiro Ichikawa (Ind.) |
| Tomiko Okazaki (DPJ) | Jiro Aichi (Ind.) | 2004 | Ichiro Ichikawa (LDP) | Mitsuru Sakurai (DPJ) |
| Tomiko Okazaki (DPJ) | Jiro Aichi (LDP) | 2007 | Ichiro Ichikawa (LDP) | Mitsuru Sakurai (DPJ) |
| Tomiko Okazaki (DPJ) | Jiro Aichi (LDP) | 2010 | Yutaka Kumagai (LDP) | Mitsuru Sakurai (DPJ) |
| Jiro Aichi (LDP) | Masamune Wada (Your Party) | 2013 | Yutaka Kumagai (LDP) | Mitsuru Sakurai (DPJ) |
| Jiro Aichi (LDP) | Masamune Wada (Your Party) | 2016 | Mitsuru Sakurai (DPJ) | |
| Noriko Ishigaki (CDP) | | 2019 | Mitsuru Sakurai (DPJ) | |
| Noriko Ishigaki (CDP) | | 2022 | Mitsuru Sakurai (LDP) | |
* ↑ Joined the Democratic Party for the People on 7 May 2018 along with a number of other members of the Democratic Party
* ↑ Sakurai again changed parties after the DPP joined an opposition parliamentary group with several other parties including the CDP. This time he joined the ruling Liberal Democratic Party
* ↑ Resigned 3 March 1965
* ↑ Held 11 April 1965
* ↑ Died in office 25 January 1992
* ↑ Held 8 March 1992
* ↑ Resigned 9 October 1997
* ↑ Held 16 November 1997

## Election Results
### Elections in the 2020s

2022 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Mitsuru Sakurai (Incumbent) (Endorsed by Komeito) | 472,963 | 51.9 | 4.9 |
| | Constitutional Democratic | Kimiko Obata | 271,455 | 29.8 | New |
| | Ishin | Midori Hirai | 91,924 | 10.1 | |
| | Sanseitō | Lawrence Ayako | 52,938 | 5.8 | |
| | Anti-NHK | Yuya Nakae | 21,286 | 2.3 | |
| Registered electors | Registered electors | Registered electors | 1,921,486 | | |
| Majority | Majority | Majority | 201,508 | 22.1 | New |
| Turnout | Turnout | Turnout | 937,685 | 48.8 | 3.6 |
| | Liberal Democratic gain from Democratic | Liberal Democratic gain from Democratic | Swing | | |

### Elections in the 2010s

2019 :
| Party | Party | Candidate | Votes | % | ±% |
| | Constitutional Democratic | Noriko Ishigaki (Endorsed by the JCP's Miyagi Prefectural Committee, the SDP and the DPP) | 474,692 | 48.6 | New |
| | Liberal Democratic | Jiro Aichi (Incumbent) (Endorsed by Komeito) | 465,194 | 47.7 | 3.0 |
| | Anti-NHK | Noriaki Miyake | 36,721 | 3.7 | New |
| Registered electors | Registered electors | Registered electors | 1,942,518 | | |
| Majority | Majority | Majority | 9,498 | 0.9 | |
| Turnout | Turnout | Turnout | 993,986 | 51.2 | |
| | Constitutional Democratic gain from Liberal Democratic | Constitutional Democratic gain from Liberal Democratic | Swing | | |
| | Your loss (seat eliminated) | Your loss (seat eliminated) | Your loss (seat eliminated) | Your loss (seat eliminated) | Your loss (seat eliminated) |
2016 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Mitsuru Sakurai (Incumbent) (Endorsed by Communist, Social Democratic, and People's Life parties) | 510,450 | 51.1 | New |
| | Liberal Democratic | Yutaka Kumagai (Incumbent) (Endorsed by Komeito, Party for Japanese Kokoro) | 469,268 | 47.0 | 20.2 |
| | Happiness Realization | Tetsushi Yui | 19,129 | 1.9 | New |
| Registered electors | Registered electors | Registered electors | 1,947,737 | | |
| Majority | Majority | Majority | 41,182 | 4.1 | New |
| Turnout | Turnout | Turnout | 1,020,419 | 52.4 | 0.9 |
| | Democratic gain from Liberal Democratic | Democratic gain from Liberal Democratic | Swing | | |
| | Democratic loss (seat eliminated) | Democratic loss (seat eliminated) | Democratic loss (seat eliminated) | Democratic loss (seat eliminated) | Democratic loss (seat eliminated) |
2013 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Jiro Aichi (Incumbent) (Endorsed by Komeito) | 421,634 | 44.7 | 10.2 |
| | Your | Masamune Wada | 220,207 | 23.4 | New |
| | Democratic | Tomiko Okazaki (Incumbent) | 215,105 | 22.8 | 29.9 |
| | Communist | Ayako Iwabuchi | 76,515 | 8.1 | 1.2 |
| | Happiness Realization | Noriko Saikachi | 9,662 | 1.0 | New |
| Registered electors | Registered electors | Registered electors | 1,906,260 | | |
| Turnout | Turnout | Turnout | | 50.8 | 5.0 |
| | Liberal Democratic gain from Democratic | Liberal Democratic gain from Democratic | Swing | | |
| | Your gain from Liberal Democratic | Your gain from Liberal Democratic | Swing | | |
2010 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Yutaka Kumagai | 265,343 | 26.8 | 11.6 |
| | Democratic | Mitsuru Sakurai (Incumbent) | 241,460 | 24.4 | 13.4 |
| | Democratic | Hiromi Ito | 162,771 | 16.5 | New |
| | Independent | Ichiro Ichikawa (Incumbent) | 109,137 | 11.0 | New |
| | Your | Fumihiro Kikuchi | 106,563 | 10.8 | New |
| | Social Democratic | Tetsuo Kanno | 51,463 | 5.2 | 0.2 |
| | Communist | Mikio Kato | 44,973 | 4.5 | 5.3 |
| | Happiness Realization | Yoshiaki Murakami | 7,319 | 0.7 | New |
| Registered electors | Registered electors | Registered electors | 1,908,319 | | |
| Turnout | Turnout | Turnout | 1,017,897 | 53.3 | 0.6 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 5.8 | |
| | Democratic hold | Democratic hold | Swing | 6.7 | |

### Elections in the 2000s

2007 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Tomiko Okazaki (Incumbent) | 549,183 | 52.7 | 20.5 |
| | Liberal Democratic | Jiro Aichi (Incumbent) | 359,099 | 34.5 | 7.0 |
| | Communist | Mikio Kato | 71,689 | 6.9 | 1.0 |
| | Social Democratic | Kiyomi Kishida | 61,349 | 5.9 | 0.2 |
| Registered electors | Registered electors | Registered electors | 1,908,286 | | |
| Turnout | Turnout | Turnout | 1,064,632 | 55.8 | 0.2 |
| | Democratic hold | Democratic hold | Swing | 17.6 | |
| | Liberal Democratic gain from Independent | Liberal Democratic gain from Independent | Swing | 11.1 | |
2004 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Ichiro Ichikawa (Incumbent) | 379,342 | 38.4 | 15.2 |
| | Democratic | Mitsuru Sakurai (Incumbent) | 372,817 | 37.8 | 14.6 |
| | Communist | Ikuko Endo | 96,862 | 9.8 | 0.8 |
| | Independent | Toshiaki Sugawara | 84,578 | 8.6 | New |
| | Social Democratic | Katsuo Okita | 53,191 | 5.4 | 1.7 |
| Registered electors | Registered electors | Registered electors | 1,889,603 | | |
| Turnout | Turnout | Turnout | 1,018,873 | 53.9 | 0.4 |
| | Liberal Democratic gain from Democratic | Liberal Democratic gain from Democratic | Swing | 15.5 | |
| | Democratic gain from Independent | Democratic gain from Independent | Swing | 17.1 | |
2001 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Tomiko Okazaki (Incumbent) | 320,417 | 32.2 | 19.6 |
| | Independent | Jiro Aichi | 272,874 | 27.5 | New |
| | Liberal Democratic | Hiroaki Kametani (Incumbent) | 132,070 | 14.0 | 15.7 |
| | Social Democratic | Masatoshi Yoshida | 60,693 | 6.1 | New |
| | Communist | | | | |
| | Liberal League | Kiyoharu Sato | 23,308 | 2.3 | New |
| Registered electors | Registered electors | Registered electors | 1,864,852 | | |
| Turnout | Turnout | Turnout | 1,035,925 | 55.6 | 14.5 |
| | Democratic gain from Independent | Democratic gain from Independent | Swing | 9.8 | |
| | Independent gain from Liberal Democratic | Independent gain from Liberal Democratic | Swing | N/A | |

### Elections in the 1990s

1998 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Mitsuru Sakurai | 245,273 | 26.0 | New |
| | Independent | Ichiro Ichikawa | 218,478 | 23.2 | New |
| | Liberal Democratic | Kaname Endo (Incumbent) | 132,070 | 14.0 | 34.5 |
| | Independent | Sayuri Kamada | 106,070 | 11.3 | New |
| | Communist | Michiko Sato | 100,214 | 10.6 | 2.0 |
| | Social Democratic | Yoshihiro Sato | 66,810 | 7.1 | New |
| | Independent | Yukio Nakazawa | 32,477 | 3.4 | New |
| | Women's Party | Kikumi Hayasaka | 21,330 | 2.3 | New |
| | Liberal League | Akemi Ishikawa | 20,413 | 2.2 | New |
| Registered electors | Registered electors | Registered electors | 1,813,134 | | |
| Turnout | Turnout | Turnout | 983,988 | 54.3 | Unknown |
| | Democratic gain from Liberal Democratic | Democratic gain from Liberal Democratic | Swing | | |
| | Independent win (new seat) | Independent win (new seat) | Independent win (new seat) | Independent win (new seat) | Independent win (new seat) |
1997 By-Election :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Tomiko Okazaki | 283,255 | 51.8 | New |
| | Meeting to create the Miyagi of Tomorrow | Kimio Doi | 112,098 | 20.5 | New |
| | Communist | Ikuko Endo | 101,106 | 18.5 | 11.1 |
| | Social Democratic | Yoshihiro Sato | 49,902 | 9.1 | New |
| Registered electors | Registered electors | Registered electors | Unknown | | |
| Majority | Majority | Majority | 171,157 | 31.3 | New |
| Turnout | Turnout | Turnout | | 31.1 | 10.0 |
| | Democratic gain from Liberal Democratic | Democratic gain from Liberal Democratic | Swing | | |
1995 :
| Party | Party | Candidate | Votes | % | ±% |
| | Independent | Ichiro Ichikawa | 238,416 | 34.2 | New |
| | Liberal Democratic | Hiroaki Kametani | 206,987 | 29.7 | 5.4 |
| | Democratic Reform Party | Hiroki Hagano | 176,879 | 25.4 | New |
| | Communist | | | | |
| | New Era Party | Yuriko Ishigoka | 23,792 | 3.4 | New |
| Registered electors | Registered electors | Registered electors | 1,756,073 | | |
| Turnout | Turnout | Turnout | 721,043 | 41.1 | 20.1 |
| | Independent gain from Democratic Reform | Independent gain from Democratic Reform | Swing | | |
| | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) |
1992 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kaname Endo (Incumbent) | 380,249 | 48.5 | 2.8 |
| | Democratic Reform | Katsue Seto (Endorsed by the JSP, DSP and the SDF) | 294,599 | 37.6 | New |
| | Communist | | | 8.6 | 8.2 |
| | Independent | Takao Hashimoto | 41,990 | 5.4 | New |
| Registered electors | Registered electors | Registered electors | Unknown | | |
| Majority | Majority | Majority | 85,650 | 10.9 | 25.8 |
| Turnout | Turnout | Turnout | Unknown | Unknown | Unknown |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 12.2 | |
1992 By-Election :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic Reform (Endorsed by the JSP, DSP and the SDF) | Katsue Seto | 294,599 | 46.2 | New |
| | Liberal Democratic | Nobuo Onodera | 393,615 | 45.9 | 21.6 |
| | Communist | Naofumi Tsujihata | 67,378 | 7.9 | 2.5 |
| Registered electors | Registered electors | Registered electors | Unknown | | |
| Majority | Majority | Majority | 3,117 | 0.3 | New |
| Turnout | Turnout | Turnout | Unknown | 52.4 | 8.8 |
| | Democratic Reform gain from Socialist | Democratic Reform gain from Socialist | Swing | N/A | |

### Elections in the 1980s

1989 :
| Party | Party | Candidate | Votes | % | ±% |
| | Socialist | Kazuo Kurimura | 460,369 | 48.2 | 13.2 |
| | Liberal Democratic | Nagaharu Hoshi (Incumbent) | 232,253 | 24.3 | 24.2 |
| | Independent | Masashi Nakano | 137,827 | 14.4 | New |
| | Democratic Socialist | Norinori Fujiwara | 53,555 | 5.6 | New |
| | Communist | Mitsuyuki Masaki | 51,778 | 5.4 | 11.1 |
| | Green Party | Norio Hirano | 10,784 | 1.1 | New |
| | Taikosha Political Federation | Yoshio Chiba | 9,000 | 0.9 | New |
| Registered electors | Registered electors | Registered electors | 1,611,384 | | |
| Majority | Majority | Majority | 228,116 | 13.9 | New |
| Turnout | Turnout | Turnout | 986,006 | 61.2 | 6.3 |
| | Socialist gain from Liberal Democratic | Socialist gain from Liberal Democratic | Swing | 10.8 | |
1986 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kaname Endo (Incumbent) | 530,547 | 51.3 | 4.1 |
| | Socialist | Hideo Miura | 264,143 | 25.5 | 8.4 |
| | Communist | Ikuko Endo | 174,133 | 16.8 | 6.1 |
| | Independent | Seiki Suzuki | 65,723 | 6.4 | New |
| Registered electors | Registered electors | Registered electors | 1,545,439 | | |
| Majority | Majority | Majority | 266,404 | 25.8 | 4.1 |
| Turnout | Turnout | Turnout | 1,107,925 | 71.7 | 3.5 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |
1983 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Nagaharu Hoshi | 374,554 | 48.5 | 4.9 |
| | Socialist | Kosaku Ota | 270,393 | 35.0 | 11.6 |
| | Communist | Naoko Oki | 127,430 | 16.5 | New |
| Registered electors | Registered electors | Registered electors | 1,498,799 | | |
| Majority | Majority | Majority | 104,161 | 13.5 | 6.7 |
| Turnout | Turnout | Turnout | 807,253 | 53.9 | 17.5 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |
1980 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kaname Endo (Incumbent) | 561,975 | 55.4 | 10.2 |
| | Socialist | Osamu Takahashi | 344,387 | 33.9 | 4.7 |
| | Communist | Goro Shizukuishi | 108,793 | 10.7 | 3.3 |
| Registered electors | Registered electors | Registered electors | 1,442,371 | | |
| Majority | Majority | Majority | 217,588 | 21.5 | 5.5 |
| Turnout | Turnout | Turnout | 1,085,096 | 75.2 | 2.4 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |

### Elections in the 1970s

1977 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Buichi Oishi | 512,905 | 53.4 | 12.9 |
| | Socialist | Kikuo Toda (Incumbent) | 447,368 | 46.6 | 2.2 |
| Registered electors | Registered electors | Registered electors | 1,379,989 | | |
| Majority | Majority | Majority | 65,537 | 5.8 | 1.5 |
| Turnout | Turnout | Turnout | 984,760 | 71.4 | 10.5 |
| | Liberal Democratic gain from Socialist | Liberal Democratic gain from Socialist | Swing | | |
1974 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kaname Endo | 415,064 | 45.2 | 10.2 |
| | Socialist | Osamu Takahashi | 268,113 | 29.2 | 6.9 |
| | Communist | Katsutoshi Honda | 128,843 | 14.0 | 5.5 |
| | Kōmeitō | Kazuo Takeda | 96,169 | 10.5 | New |
| | Independent | Tomio Tanno | 9,631 | 1.1 | New |
| Registered electors | Registered electors | Registered electors | 1,304,765 | | |
| Turnout | Turnout | Turnout | 949,347 | 72.8 | 3.4 |
| Majority | Majority | Majority | 146,951 | 16.0 | 3.3 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |
1971 :
| Party | Party | Candidate | Votes | % | ±% |
| | Socialist | Kikuo Toda (Incumbent) | 322,058 | 44.8 | 6.7 |
| | Liberal Democratic | Sato Tamizaburo | 291,184 | 40.5 | 6.5 |
| | Communist | Den Abe | 58,812 | 8.2 | 4.4 |
| | Independent | Yoshio Chiba | 46,212 | 6.4 | New |
| Registered electors | Registered electors | Registered electors | 1,227,496 | | |
| Majority | Majority | Majority | 30,874 | 4.3 | 1.2 |
| Turnout | Turnout | Turnout | 747,300 | 60.9 | 5.3 |
| | Socialist hold | Socialist hold | Swing | | |

### Elections in the 1960s

1968 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Bunguro Takahashi (Incumbent) | 405,652 | 55.4 | 1.7 |
| | Socialist | Katsuro Haga | 263,884 | 36.1 | 2.5 |
| | Communist | Den Abe | 62,400 | 8.5 | 4.8 |
| Registered electors | Registered electors | Registered electors | 1,127,773 | | |
| Majority | Majority | Majority | 141,768 | 19.3 | 9.7 |
| Turnout | Turnout | Turnout | 782,900 | 69.4 | 0.2 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |
1965 :
| Party | Party | Candidate | Votes | % | ±% |
| | Socialist | Kikuo Toda | 253,652 | 38.1 | 4.3 |
| | Liberal Democratic | Hiro Furuchi | 233,050 | 35.0 | 28.6 |
| | Independent | Hisayoshi Muramatsu (Incumbent) | 154,058 | 23.1 | New |
| | Communist | Den Abe | 25,445 | 3.8 | 1.2 |
| Registered electors | Registered electors | Registered electors | 1,049,109 | | |
| Majority | Majority | Majority | 20,602 | 3.1 | New |
| Turnout | Turnout | Turnout | 694,825 | 66.2 | 9.2 |
| | Socialist gain from Liberal Democratic | Socialist gain from Liberal Democratic | Swing | | |
1965 By-Election :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Bungoro Takahashi | 256,658 | 57.1 | 5.5 |
| | Socialist | Kikuo Toda | 143,145 | 31.9 | New |
| | Democratic Socialist | Kinjiro Hikiji | 33,367 | 7.4 | New |
| | Communist | Den Abe | 16,140 | 3.6 | New |
| Registered electors | Registered electors | Registered electors | Unknown | | |
| Majority | Majority | Majority | 113,513 | 25.2 | 3.8 |
| Turnout | Turnout | Turnout | | 43.2 | 16.0 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |

### Elections in the 1950s

1959 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Hisayoshi Muramatsu | 342,720 | 63.6 | New |
| | Socialist | Zenzo Akai | 182,064 | 33.8 | New |
| | Communist | Den Abe | 13,835 | 2.6 | New |
| Registered electors | Registered electors | Registered electors | 989,567 | | |
| Majority | Majority | Majority | 160,656 | 29.8 | New |
| Turnout | Turnout | Turnout | 564,053 | 57.0 | 3.7 |
| | Liberal Democratic gain from Liberal | Liberal Democratic gain from Liberal | Swing | | |
1956 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Shintaro Takahashi | 336,366 | 57.9 | New |
| | Socialist | Fujio Takahashi | 244,215 | 42.1 | New |
| Registered electors | Registered electors | Registered electors | 938,724 | | |
| Majority | Majority | Majority | 92,151 | 15.8 | New |
| Turnout | Turnout | Turnout | 611,109 | 65.1 | 7.6 |
| | Liberal Democratic gain from Liberal | Liberal Democratic gain from Liberal | Swing | | |
1953 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Shinji Yoshino | 194,909 | 38.8 | New |
| | Left Socialist | Fujio Takahashi | 140,547 | 28.0 | New |
| | Kaishintō | Seijiro Takahashi | 112,137 | 22.3 | New |
| | Independent | Seino Gakudo | 55,174 | 11.0 | New |
| Registered electors | Registered electors | Registered electors | 883,149 | | |
| Majority | Majority | Majority | 54,362 | 10.8 | New |
| Turnout | Turnout | Turnout | 536,159 | 60.7 | 1.4 |
| | Liberal gain from Socialist | Liberal gain from Socialist | Swing | | |
1950 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Shintaro Takahashi | 295,887 | 54.0 | New |
| | Democratic Party for the People | Kei Takahashi (Incumbent) | 121,478 | 22.2 | New |
| | Socialist | Tatsujiro Yonekura | 101,593 | 18.5 | 11.4 |
| | Communist | Kanroku Saijo | 29,116 | 5.3 | New |
| Registered electors | Registered electors | Registered electors | 816,456 | | |
| Majority | Majority | Majority | 174,409 | 31.8 | New |
| Turnout | Turnout | Turnout | 593,890 | 72.7 | 13.4 |
| | Liberal gain from Democratic | Liberal gain from Democratic | Swing | | |

### Elections in the 1940s

1947 :
| Party | Party | Candidate | Votes | % | ±% |
| | Socialist | Takeo Sai | 122,668 | 29.9 | New |
| | Democratic | Kei Takahashi | 103,984 | 25.4 | New |
| | Liberal | Chushichi Shoji | 91,604 | 22.4 | New |
| | Liberal | Atanobu Tairano | 91,564 | 22.3 | New |
| Registered electors | Registered electors | Registered electors | 778,836 | | |
| Turnout | Turnout | Turnout | 461,850 | 59.3 | New |
| | Socialist win (new seat) | Socialist win (new seat) | Socialist win (new seat) | Socialist win (new seat) | Socialist win (new seat) |
| | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) |