Ōita 3rd district

Ōita 3rd district
Parliamentary constituency
for the Japanese House of Representatives
Numbered map of Ōita Prefecture single-member districts
PrefectureŌita
Proportional DistrictKyushu
Electorate292,443[1]
Current constituency
Created1994
SeatsOne
PartyLDP
RepresentativeTakeshi Iwaya
MunicipalitiesCities of Beppu, Bungotakada, Kitsuki, Nakatsu, Kunisaki, and Usa.
Districts of Hayami, and Higashikunisaki.

Ōita 3rd district (大分県第3区, Ōita-ken dai-sanku or simply 大分3区, Ōita-sanku ) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Ōita Prefecture.

In the 2026 election, the incumbent, former Foreign Minister (Oct 2024–Oct 2025) Takeshi Iwaya; faced several conservative challengers, including activist Uryu Hirano, who criticized him for his alleged 'weak stance' on China.[2]

Areas covered

Since 2013

[3][4]

2002 - 2013

[5]

1994 - 2002

[6]

List of representatives

Election Representative Party Notes
1996[7] Eijiro Hata NFP
Sun
GGP
Democratic
2000[8] Takeshi Iwaya LDP
2003[9]
2005[10]
2009[11] Katsuhiko Yokomitsu Democratic
2012[12] Takeshi Iwaya LDP
2014[13]
2017[14]
2021[15]
2024[16]
2026

Election results

2026 • 2024 • 2021 • 2017 • 2014 • 2012 • 2009 • 2005 • 2003 • 2000 • 1996

2026

2026
Party Candidate Votes % ±%
LDP Takeshi Iwaya (Incumbent) 57,996 34.6 20.6
Centrist Reform Kayako Kobayashi 50,681 30.2 7.9
Independent Uryu Hirano 24,260 14.5
CPJ Kyōko Iwanaga 18,768 11.2
Sanseitō Kie Nonaka 15,955 9.5
Registered electors 287,222
Turnout 59.73 3.66
LDP hold

2024

2024[16]
Party Candidate Votes % ±%
LDP Takeshi Iwaya
(Incumbent) 		87,301 55.23 3.19
CDP Kayako Kobayashi 60,207 38.09 3.49
JCP Mitsuyoshi Otsuka 10,550 6.68 N/A
Majority 27,094 17.14
Registered electors 291,486
Turnout 56.07 3.60
LDP hold

2021

2021[15]
Party Candidate Votes % ±%
LDP Takeshi Iwaya
(Incumbent) 		102,807 58.42 4.26
CDP Katsuhiko Yokomitsu 73,159 41.58 New
Majority 29,648 16.84
Registered electors 301,700
Turnout 59.67 0.10
LDP hold

2017

2017[14]
Party Candidate Votes % ±%
LDP Takeshi Iwaya
(Incumbent) 		99,412 54.16 7.51
CDP Katsuhiko Yokomitsu
(Won PR seat) 		84,133 45.84 New
Majority 15,279 8.32
Registered electors 312,610
Turnout 59.77 3.04
LDP hold

2014

2014[13]
Party Candidate Votes % ±%
LDP Takeshi Iwaya
(Incumbent) 		106,257 61.67 11.33
Democratic Hideki Urano 48,389 28.08 3.42
JCP Mitsuyoshi Otsuka 17,657 10.25 6.11
Majority 57,868 33.59
Registered electors 312,365
Turnout 56.73
LDP hold

2012

2012[12]
Party Candidate Votes % ±%
LDP Takeshi Iwaya 100,606 50.34 2.85
Democratic Katsuhiko Yokomitsu
(Incumbent) 		62,949 31.50 19.54
Your Masatoshi Kan 28,013 14.02 New
JCP Mitsuyoshi Otsuka 8,301 4.14 N/A
Majority 37,657 18.84
Registered electors
Turnout
LDP gain from Democratic

2009

2009[11]
Party Candidate Votes % ±%
Democratic Katsuhiko Yokomitsu 121,031 51.04 4.12
LDP Takeshi Iwaya
(Incumbent)
(Won PR seat) 		112,602 47.49 5.59
Happiness Realization Tetsuya Toshimitsu 3,489 1.47 New
Majority 8,429 3.55
Registered electors
Turnout
Democratic gain from LDP

2005

2005[10]
Party Candidate Votes % ±%
LDP Takeshi Iwaya
(Incumbent) 		127,656 53.08 1.82
Democratic Katsuhiko Yokomitsu
(Won PR seat) 		112,833 46.92 N/A
Majority 14,823 6.16
Registered electors
Turnout
LDP hold

2003

2003[9]
Party Candidate Votes % ±%
LDP Takeshi Iwaya
(Incumbent) 		123,798 51.26 9.05
Social Democratic Katsuhiko Yokomitsu
(Won PR seat) 		111,180 46.04 New
JCP Tsutomu Ogawa 6,521 2.70 3.68
Majority 12,618 5.22
Registered electors
Turnout
LDP hold

2000

2000[8]
Party Candidate Votes % ±%
LDP Takeshi Iwaya 95,046 60.31 19.05
Democratic Taro Nakamura 50,024 31.74 New
JCP Tsutomu Ogawa 10,057 6.38 0.37
Liberal League Tsuneaki Umeki 2,470 1.57 0.27
Majority 45,022 28.57
Registered electors
Turnout
LDP gain from Democratic

1996

1996[7]
Party Candidate Votes % ±%
New Frontier Eijiro Hata 77,936 50.69 New
LDP Tetsuaki Makino 63,440 41.26 New
JCP Yōko Hino 10,375 6.75 New
Liberal League Tsuneaki Umeki 1,998 1.30 New
Majority 14,496 9.43
Registered electors
Turnout
New Frontier win (new seat)

References

  1. ^ Ministry of Internal Affairs and Communications (MIC): [1] (in Japanese)
  2. ^ "Anti-Japanese Museum in Canada Draws Criticism from Lawmakers". Japan Forward. Retrieved 3 March 2026.
  3. ^ "衆議院トップページ >立法情報 >制定法律情報 >第183回国会 制定法律の一覧 >衆議院小選挙区選出議員の選挙区間における人口較差を緊急に是正するための公職選挙法及び衆議院議員選挙区画定審議会設置法の一部を改正する法律の一部を改正する法律 法律第六十八号（平二五・六・二八）". House of Representatives of Japan. June 28, 2013. Retrieved February 12, 2025.
  4. ^ "Ōita" (PDF). Minister for Internal Affairs and Communications. Retrieved February 12, 2025.
  5. ^ "衆議院トップページ >立法情報 >制定法律情報 >第154回国会 制定法律の一覧 >公職選挙法の一部を改正する法律 法律第九十五号（平一四・七・三一）". House of Representatives of Japan. July 31, 2002. Retrieved February 12, 2025.
  6. ^ "衆議院トップページ >立法情報 >制定法律情報 >第131回国会 制定法律の一覧 >法律第百四号（平六・一一・二五）". House of Representatives of Japan. November 25, 1994. Retrieved February 12, 2025.
  7. ^ a b "第41回衆議院議員総選挙 - 大分3区". Senkyo.com (in Japanese). Retrieved February 12, 2025.
  8. ^ a b "第42回衆議院議員総選挙 - 大分3区". Senkyo.com (in Japanese). Retrieved February 12, 2025.
  9. ^ a b "第43回衆議院議員総選挙 - 大分3区". Senkyo.com (in Japanese). Retrieved February 12, 2025.
  10. ^ a b "第44回衆議院議員総選挙 - 大分3区". The Asahi Shinbun (in Japanese). Retrieved February 12, 2025.
  11. ^ a b "第45回衆議院議員総選挙 - 大分3区". The Asahi Shinbun (in Japanese). Retrieved February 12, 2025.
  12. ^ a b "開票結果 小選挙区 大分". The Asahi Shimbun (in Japanese). Retrieved February 12, 2025.
  13. ^ a b "2014衆院選:衆議院選挙:選挙アーカイブス:NHK選挙WEB". NHK (in Japanese). Retrieved February 12, 2025.
  14. ^ a b "2017衆院選:衆議院議員総選挙:選挙アーカイブス:NHK選挙WEB". NHK (in Japanese). Retrieved February 12, 2025.
  15. ^ a b "2021年衆議院議員総選挙 大分". NHK (in Japanese). Retrieved February 12, 2025.
  16. ^ a b "2024年衆議院議員総選挙 大分". NHK (in Japanese). Retrieved February 12, 2025.

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