Chiba at-large district

Chiba at-large district
千葉県選挙区
Parliamentary constituency
for the House of Councillors
PrefectureChiba
Electorate5,279,312 (as of September 2022)
Current constituency
Created1947
Seats6
CouncillorsClass of 2019:
  •   Junichi Ishii (LDP)
  •   Hiroyuki Nagahama (CDP)
  •   Toshiro Toyota (LDP)

Class of 2022:


The Chiba at-large district (Japanese: 千葉県選挙区, Hepburn: Chiba-ken senkyoku) is a constituency that represents Chiba Prefecture in the House of Councillors in the Diet of Japan. It has six Councillors in the 242-member house.

Outline

The constituency represents the entire population of Chiba Prefecture. The district elects six Councillors to six-year terms, two sets of three each at alternating elections held every three years. Prior to the 2007 election the district elected four Councilors in two sets of two. The district has 5,092,741 registered voters as of September 2015. The Councillors currently representing Chiba are:

Elected Councillors

Class of 1947 election year Class of 1950
(3-year term in 1947)
- Akira Ono
(Ind.)		 Hisashi Yamazaki
(Ind.)		 1947 Yoshiaki Tamaya
(Liberal)		 Ichiro Asai
(Democratic)		 -
1950 Kinsuke Kanō
(Liberal)		 Toshizō Tsuchiya
(Liberal)
1950 by-election Fumie Kataoka
(Social Democratic)
Kan Kase
(Ind.)		 Tamenosuke Kawaguchi
(Liberal)		 1953
1954 by-election Shigejiro Inō
(Liberal)
1956 Shigejirō Inō
(LDP)
Kan Kase
(Social Democratic)		 Kyūtarō Ozawa
(LDP)		 1959
1960 by-election Yoshio Kijima
(LDP)
1962 Akio Yanaoka
(Social Democratic)
1965
Gisaku Sugeno
(LDP)		 1967 by-election
1968 Ichitaro Watanabe
(LDP)
1971
1974 Takayoshi Takahashi
(LDP)		 Misao Akagiri
(Social Democratic)
1977
1980 Yutaka Inoue
(LDP)
Sōichi Usui
(LDP)		 1981 by-election
Yaeko Itohisa
(Social Democratic)		 Hiroyuki Kurata
(LDP)		 1983
1986
1989
1992
Ryōzō Iwase
(New Frontier)		 1995
1998 Wakako Hironaka
(Ind.)
Akira Imaizumi
(DPJ)		 2001
2002 by-election Kazuyasu Shiina
(LDP)
2004 Wakako Hironaka
(DPJ)
Ken Kagaya
(DPJ)		 Hiroyuki Nagahama
(DPJ)		 Junichi Ishii
(LDP)		 2007
2010 Hiroyuki Konishi
(DPJ)		 Kuniko Inoguchi
(LDP)		 Kenichi Mizuno
(Your Party)
Junichi Ishii
(LDP)		 Toshirō Toyoda
(LDP)		 Hiroyuki Nagahama
(DPJ)		 2013
2016 Kuniko Inoguchi
(LDP)		 Taichirō Motoe
(LDP)		 Hiroyuki Konishi
(DPJ)
Hiroyuki Nagahama
(CDP)		 Toshirō Toyoda
(LDP)		 2019
2022 Shoichi Usui
(LDP)		 Kuniko Inoguchi
(LDP)		 Hiroyuki Konishi
(CDP)
  1. ↑ Later joined Ryokufūkai
  2. ↑ Later joined Kaishintō
  3. ↑ Died in office 5 December 1953
  4. ↑ Died in office 6 November 1950
  5. ↑ Held 13 December 1950
  6. ↑ Joined the Leftist Socialist Party then the Social Democratic Party during his first term
  7. ↑ Held 20 January 1954
  8. ↑ Resigned 27 October 1960
  9. ↑ Died in office 18 September 1967
  10. ↑ Held 1 December 1960
  11. ↑ Died in office 25 January 1981
  12. ↑ Held 5 November 1967
  13. ↑ Resigned 8 May 2002
  14. ↑ Held 8 March 1981
  15. ↑ Joined the DPJ after the election
  16. ↑ Held 27 October 2002

Election results

2025: Chiba at-large 3 seats
Party Candidate Votes % ±%
DPP Sayaka Kobayashi 531,580 18.75 Increase12.39
CDP Hiroyuki Nagahama 500,096 17.64 Decrease0.98
LDP Junichi Ishii 431,330 15.22 Decrease10.63
Sanseitō Megu Nakaya 405,400 14.30 Increase10.91
LDP Toshirō Toyoda 277,723 9.80 Decrease13.33
Reiwa Natsumi Yamamoto 186,851 6.59 new
JCP Chiyo Shiraishi 135,751 4.79 Decrease2.86
Ishin Sadamichi Ishizuka 123,104 4.34 Decrease5.55
Independent Yūya Ōsuki 72,154 2.55 new
Team Mirai Shūhei Kobayashi 68,363 2.41 new
Independent Kyōko Ōtsuka 24,810 0.88 new
Japan Reform Party Naohisa Hashimoto 22,341 0.79 new
Anti-NHK Hiroshigi Tamamoto 21,569 0.76 Decrease0.35
Independent Tomaki Nakano 15,380 0.54 new
Nihon Kaikaku Yoshimasa Eda 9,476 0.33 new
Japan Family Party Hiroshi Ogasawara 8,652 0.31 new
Turnout 55.73 Increase5.73
Registered electors 5,250,052
Party total seats Won Total Change
Liberal Democratic 1 3 Decrease1
Constitutional Democratic 1 2 Steady
Democratic Party For the People 1 1 Increase1
2022
Party Candidate Votes %
LDP Shoichi Usui
(Endorsed by Komeito) 		656,952 25.85
LDP Kuniko Inoguchi
(Endorsed by Komeito) 		587,809 23.13
CDP Hiroyuki Konishi
(Endorsed by the SDP) 		473,175 18.62
Ishin Masato Sano 251,416 9.89
JCP Kazuko Saito 194,475 7.65
DPP Hirokazu Isobe 161,648 6.36
Sanseitō Ryota Shiina 86,147 3.39
Anti-NHK Noriko Nakamura 28,295
Happiness Realization Hiroko Nanami 22,834 0.9
Liberal Republican Party Sakurako Uda 18,791 0.74
New Party Kunimori Mari Azusa 18,329 0.72
Anti-NHK Nobuhiro Watanabe 17,511 0.69
Anti-NHK Ryo Sudara 13,016 0.51
Japan First Megumi Kiuchi 10,922 0.43
Turnout 2,705,602 50.01
Total valid votes 2,607,139# 96.36
Rejected ballots 98,463 3.64
LDP hold
LDP hold
CDP gain from Democratic
2019
Party Candidate Votes %
LDP Kuniko Inoguchi
(Endorsed by Komeito) 		698,993 30.54
CDP Hiroyuki Nagahama
(Endorsed by the DPP and the SDP) 		661,224 28.89
LDP Toshiro Toyoda
(Endorsed by Komeito) 		436,182 19.06
JCP Fumiko Asano 359,854 15.72
Anti-NHK Masayuki Hiratsuka 89,941 3.93
Euthanasia Party Masanori Kadota 42,643 1.86
Turnout 2,374,919 45.28
Total valid votes 2,288,837 96.37
Rejected ballots 86,082 3.63
LDP hold
CDP gain from LDP
LDP gain from Democratic
2016
Party Candidate Votes %
LDP Kuniko Inoguchi 760,093 29.15
LDP Taichirō Motoe 577,392 22.15
Democratic Hiroyuki Konishi 472,219 18.11
JCP Fumiko Asano 359,854 15.72
Democratic Kenichi Mizuno 314,670 12.07
Independent Masao Takahashi 57,329 2.20
Japanese Kokoro Naritomo Katori 50,098 1.92
Happiness Realization Yuzo Furukawa 23,777 0.91
Registered electors 5,201,477
Turnout 2,705,602 52.02
Total valid votes 2,607,139 96.36
Rejected ballots 98,463 3.64
LDP gain from Democratic
LDP hold
Democratic gain from Your
2013
Party Candidate Votes %
LDP Junichi Ishii
(endorsed by Komeito) 		680,706 28.5
LDP Toshiro Toyoda
(endorsed by Komeito) 		418,806 17.5
Democratic Hiroyuki Nagahama 388,529 16.3
Your Masahiro Terada 285,007 11.9
JCP Satoshi Terao 232,477 9.7
Restoration Hiroki Hanazaki 186,259 7.8
People's Life Kazumi Ota 148,240 6.2
Ishin Seito Shimpu Yuichi Watanabe 39,147 1.6
Happiness Realization Hironori Matsushima 9,227 0.4
Turnout
2010
Party Candidate Votes %
Democratic Hiroyuki Konishi
(endorsed by People's New Party) 		35,632 20.2
LDP Kuniko Inoguchi 513,772 19.3
Your Kenichi Mizuko 476,259 17.9
Democratic Ayumi Michi 463,648 17.4
LDP Kazuyasu Shiina 395,746 14.9
JCP Kazuko Saito 163,803 6.2
New Renaissance Hisashi Koga 66,384 2.5
Sunrise Satoshi Shimizu 29,926 1.1
Happiness Realization Masahiko Makino 12,669 0.5
Turnout
2007
Party Candidate Votes %
Democratic Hiroyuki Nagahama 666,241 25.2
LDP Junichi Ishii
(endorsed by Komeito) 		541,701 20.5
Democratic Ken Kagaya 477,402 18.1
LDP Takaki Shirasuka
(endorsed by Komeito)		 387,395 14.7
JCP Fumiko Asano 214,991 8.1
Independent Susumu Honma 130,364 4.9
Social Democratic Kazumi Aoki 124,113 4.7
People's New Michiko Iwabuchi 99,316 3.8
Turnout
2004
Party Candidate Votes %
Democratic Wakako Hironaka 1,187,663 49.1
LDP Kazuyasu Shiina
(endorsed by Komeito) 		944,231 39.0
JCP Fumiko Asano 288,072 11.9
Turnout
2002 By-Election
Party Candidate Votes %
LDP Kazuyasu Shiina 509,688 45.1
Clean Chiba Political Roundtable Yasuhito Wakai 422,185 37.4
JCP Fumiko Asano 197,699 17.5
Turnout 39.61

See also

References

  1. ↑ "総務省｜令和4年9月1日現在選挙人名簿及び在外選挙人名簿登録者数" [Ministry of Internal Affairs and Communications - Number of registered voters as of 1 September 2022] (in Japanese). Retrieved 2023-01-04.
  2. ↑ "平成２７年９月２日現在選挙人名簿及び在外選挙人名簿登録者数" [Number of resident and non-resident enrolled voters as of 2 September 2015] (in Japanese). 2 September 2015. Retrieved 8 April 2016.
  3. ↑ "猪口　邦子（いのぐち　くにこ）：参議院" [Inoguchi, Kuniko: House of Councillors] (in Japanese). Retrieved 8 April 2016.
  4. ↑ "小西　洋之（こにし　ひろゆき）：参議院" [Konishi, Hiroyuki: House of Councillors] (in Japanese). Retrieved 8 April 2016.
  5. ↑ "水野　賢一（みずの　けんいち）：参議院" [Mizuno, Kenichi: House of Councillors] (in Japanese). Archived from the original on 30 March 2016. Retrieved 8 April 2016.
  6. ↑ "石井　準一（いしい　じゅんいち）：参議院" [Ishii, Junichi: House of Councillors] (in Japanese). Retrieved 8 April 2016.
  7. ↑ "長浜　博行（ながはま　ひろゆき）：参議院" [Nagahama, Hiroyuki: House of Councillors] (in Japanese). Retrieved 8 April 2016.
  8. ↑ "豊田　俊郎（とよだ　としろう）：参議院" [Toyoda, Toshiro: House of Councillors] (in Japanese). Retrieved 8 April 2016.
  9. 1 2 3 4 5 6 7 8 9 10 11 "List of Former Councillors (A to Sa)" (in Japanese). House of Councillors. 2007. Archived from the original on 2 September 2009. Retrieved 8 April 2016.
  10. ↑ "List of Former Councillors (Ma to Wa)" (in Japanese). House of Councillors. 2007. Archived from the original on 3 September 2009. Retrieved 8 April 2016.
  11. ↑ "List of Former Councillors (Ta to Ha)" (in Japanese). House of Councillors. 2007. Archived from the original on 3 September 2009. Retrieved 8 April 2016.
  12. 1 2 Satō, Yoshi (令) (December 2005). "Post-War By-Elections" (PDF) (in Japanese). national Diet Library. p. 92. Archived from the original (PDF) on 10 December 2006. Retrieved 8 April 2016.
  13. 1 2 "選挙区開票結果　<千葉県>" [District results (Chiba)]. Asahi Shimbun. Retrieved 8 April 2016.
  14. 1 2 "選挙区　千葉県 開票結果 参院選2007" [Chiba At-large district election results, 2007 House of Councillors election]. Yomiuri Shimbun. Retrieved 8 April 2016.
  15. 1 2 "選挙区　千葉県 開票結果 参院選2010 参院選 選挙" [Chiba At-large district election results, 2010 House of Councillors election]. Yomiuri Shimbun. Retrieved 8 April 2016.
  16. 1 2 "選挙区　千葉県 開票結果 参院選2013 参院選 選挙" [Chiba At-large district election results, 2013 House of Councillors election]. Yomiuri Shimbun. Retrieved 8 April 2016.
  17. 1 2 "[Election District] Chiba Prefecture 2016". Yomiuri Shimbun. Archived from the original on 30 Sep 2017. Retrieved 31 Oct 2023.
  18. 1 2 "House of Councilors election 2019 Cho". 読売新聞オンライン (in Japanese). 2019-07-03. Retrieved 2023-10-31.
  19. 1 2 "Chiba House of Councilors Election 2022 - Election News/Vote Counting Results". 読売新聞オンライン (in Japanese). 2022-06-22. Retrieved 2023-10-31.
  20. ↑ "千葉選挙区 - 第27回参議院議員選挙 2025年（参議院議員通常選挙）2025年07月20日投票 ｜ 選挙ドットコム". 選挙ドットコム (in Japanese). Retrieved 2025-07-24.