Ōita at-large district
Constituency in the House of Councillors of Japan
Ōita at-large district
大分県選挙区
Parliamentary constituency
for the House of Councillors
PrefectureŌita
Electorate950,450 (as of September 2022)[1]
Current constituency
Created1947
Seats2
CouncillorsClass of 2019:
  •   Aki Shirasaka[a] (LDP)

Class of 2022:

  •   Harutomo Koshō (LDP)

Ōita at-large district is a constituency in the House of Councillors of Japan, the upper house of the Diet of Japan (national legislature). It currently elects 2 members to the House of Councillors, 1 per election. It is unique among other Kyushu conservative kingdoms for its willingness to elect opposition members. Shinya Adachi held the districts 2022 seat from 2004, and Kiyoshi Adachi held the 2016 seat until his resignation in 2023, with Tadatomo Yoshida losing the by-election after by an extremely slim margin. This is possibly due to the presence of the city of Ōita, which has shown a willingness to support opposition candidates; it was historically also represented by a second Japan Socialist Party Councilor.

Elected members of House of Councillors

Class of (1947/1953/...)ElectionClass of (1950/1956/...)
#1

1947: #1, 6 Year Term

#1

1947: #2, 3 Year Term

Jinzo Iwao
(NCP)		1947Masaji Hitotsumatsu
(LP)
1950Masaji Hitotsumatsu
(Yoshida LP)
Fumio Gotō
(Indep.)		1953
1956Yoshitaka Goto
(LDP)
Haruzo Murakami
(LDP)		1959
1962Yoshitaka Goto
(LDP)
Haruzo Murakami
(LDP)		1965
1968Yoshitaka Goto
(LDP)
Ryohei Kudo
(JSP)		1971
1974Hidekazu Iwao † 1976
(LDP)
1976
by-election		Masao Goto
(OFF)
Seishirō Etō (ATSNS)1977
1980Masao Goto
(LDP)
Keigi Kajiwara
(JSP)		1983
1986Masao Goto
(LDP)
Keigi Kajiwara
(JSP)		1989
1992Ban Kugimiya
(LDP)
Keigi Kajiwara
(JSP)		1995
1998Toshiya Nakamichi
(LDP)
Hiroko Goto
(LDP)		2001
2004Shinya Adachi
(DPJ)
Yōsuke Isozaki
(LDP)		2007
2010Shinya Adachi
(DPJ)
Yōsuke Isozaki
(LDP)		2013
2016Shinya Adachi
(DP)
Kiyoshi Adachi
(Indep.)		2019
2022Harutomo Kosho
(LDP)
Aki Shirasaka
(LDP)		2023
by-election

OFF - Oita Farrmers Federation ASTNS - Association To Send a New Style to National Politics †: Died in Office

Election results

2023 by-election[2]
PartyCandidateVotes%±%
LDPAki Shirasaka [ja]196,12250.04Increase 3.46
CDPTadatomo Yoshida195,78149.96New
Registered electors943,477
Turnout42.48Decrease 10.50
2022[3]
PartyCandidateVotes%±%
LDPHarutomo Kosho [ja]228,41746.58Increase 0.52
DPPShinya Adachi
(Incumbent)		183,25837.37New
JCPKai Yamashita35,7057.28Decrease 3.73
SanseitōYūko Shigematsu21,7234.43New
Anti-NHKTaizo Ninomiya10,7702.20Decrease 2.19
IndependentYūichi Kotegawa10,5122.14New
Registered electors950,511
Turnout52.98Increase 2.44
2019[4]
PartyCandidateVotes%±%
IndependentKiyoshi Adachi236,15349.55New
LDPYōsuke Isozaki
(Incumbent)		219,49846.06Decrease 1.88
Anti-NHKTaizo Ninomiya20,9094.39New
Registered electors969,453
Turnout50.54Decrease 7.84
2016[5]
PartyCandidateVotes%±%
DPShinya Adachi
(Incumbent)		271,78348.13New
LDPHarutomo Kosho270,69347.94Decrease 2.04
HRPAtsuko Ueda22,1533.92Increase 1.08
Registered electors989,634
Turnout58.38Increase 5.23
2013[6]
PartyCandidateVotes%±%
LDPYōsuke Isozaki
(Incumbent)		250,91549.98Increase 7.41
IndependentShintaro Goto137,04927.30New
JCPKai Yamashita55,24911.01Increase 2.26
YPHideki Urano44,5428.87New
HRPAtsuko Ueda14,2652.84New
Registered electors981,222
Turnout53.15Decrease 9.81
2010[7]
PartyCandidateVotes%±%
DPJShinya Adachi
(Incumbent)		294,28648.68Decrease 6.14
LDPKiyoshi Odawara [ja]257,32242.57Increase 9.93
JCPKai Yamashita52,8638.75Increase 2.57
Registered electors990,648
Turnout62.96Increase 5.23

Notes

  1. ^ Shirasaka was elected in a by-election in 2023, following Kiyoshi Adachi resigning to run for Governor of Ōita Prefecture.

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. ^ "参議院議員補欠選挙 大分県選挙区". NHK (in Japanese). Retrieved 2023-10-31.
  3. ^ "第26回参議院議員通常選挙 大分県選挙区". NHK (in Japanese). Retrieved 2023-10-31.
  4. ^ "第25回参議院議員通常選挙 大分県選挙区". NHK (in Japanese). Retrieved 2023-10-31.
  5. ^ "第24回参議院議員通常選挙 大分県選挙区". NHK (in Japanese). Retrieved 2023-10-31.
  6. ^ "第23回参議院議員通常選挙 大分県選挙区". NHK (in Japanese). Retrieved 2023-10-31.
  7. ^ "第22回参議院議員通常選挙 大分県選挙区". NHK (in Japanese). Retrieved 2023-10-31.


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