Ōita 3rd district

Ōita 3rd district
Ōita 3rd district
Parliamentary constituency; for the Japanese House of Representatives
	Numbered map of Ōita Prefecture single-member districts
Prefecture	Ōita
Proportional District	Kyushu
Electorate	292,443
Current constituency
Created	1994
Seats	One
Party	LDP
Representative	Takeshi Iwaya
Municipalities	Cities of Beppu, Bungotakada, Kitsuki, Nakatsu, Kunisaki, and Usa.; Districts of Hayami, and Higashikunisaki.

PrefectureŌita

Proportional DistrictKyushu

Electorate292,443^[1]

Created1994

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]

[1]

[2]

Election	Representative
1996^[7]	Eijiro Hata [ja]	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

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

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

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

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

Ōita 3rd district

Since 2013

2002 - 2013

1994 - 2002

List of representatives

Election results

2026

2024

2021

2017

2014

2012

2009

2005

2003

2000

1996

References

Related Articles

Ōita 3rd district
Parliamentary constituency for the Japanese House of Representatives
Numbered map of Ōita Prefecture single-member districts
Prefecture	Ōita
Proportional District	Kyushu
Electorate	292,443^[1]
Current constituency
Created	1994
Seats	One
Party	LDP
Representative	Takeshi Iwaya
Municipalities	Cities of Beppu, Bungotakada, Kitsuki, Nakatsu, Kunisaki, and Usa. Districts of Hayami, and Higashikunisaki.

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

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

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

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

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

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

Party		Candidate	Votes	%	±%
	New Frontier	Eijiro Hata [ja]	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)

v t e First-past-the-post (FPTP) districts and proportional representation (PR) "blocks" for the Japanese House of Representatives of the National Diet (1996–present)
Speaker of the House of Representatives of Japan: Eisuke Mori, Chiba 11th Vice Speaker of the House of Representatives of Japan: Keiichi Ishii, Northern Kanto PR
Hokkaidō	Block 8 seats Hokkaidō 1 2 3 4 5 6 7 8 9 10 11 12
Tōhoku	Block 12 seats Aomori 1 2 3 Iwate 1 2 3 Miyagi 1 2 3 4 5 Akita 1 2 3 Yamagata 1 2 3 Fukushima 1 2 3 4
Kita- (North) Kantō	Block 19 seats Ibaraki 1 2 3 4 5 6 7 Tochigi 1 2 3 4 5 Gunma 1 2 3 4 5 Saitama 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Minami- (South) Kantō	Block 23 seats Chiba 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Kanagawa 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Yamanashi 1 2
Tokyo	Block 19 seats Tokyo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Hokuriku-Shin'etsu	Block 10 seats Niigata 1 2 3 4 5 Toyama 1 2 3 Ishikawa 1 2 3 Fukui 1 2 Nagano 1 2 3 4 5
Tōkai	Block 21 seats Gifu 1 2 3 4 5 Shizuoka 1 2 3 4 5 6 7 8 Aichi 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Mie 1 2 3 4
Kinki	Block 28 seats Shiga 1 2 3 Kyoto 1 2 3 4 5 6 Osaka 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Hyōgo 1 2 3 4 5 6 7 8 9 10 11 12 Nara 1 2 3 Wakayama 1 2
Chūgoku	Block 10 seats Tottori 1 2 Shimane 1 2 Okayama 1 2 3 4 Hiroshima 1 2 3 4 5 6 Yamaguchi 1 2 3
Shikoku	Block 6 seats Tokushima 1 2 Kagawa 1 2 3 Ehime 1 2 3 Kōchi 1 2
Kyūshū	Block 20 seats Fukuoka 1 2 3 4 5 6 7 8 9 10 11 Saga 1 2 Nagasaki 1 2 3 Kumamoto 1 2 3 4 Ōita 1 2 3 Miyazaki 1 2 3 Kagoshima 1 2 3 4 Okinawa 1 2 3 4
Former districts	Abolished in 2002 Hokkaido 13 Yamagata 4 Shizuoka 9 Shimane 3 Oita 4 Abolished in 2013 Fukui 3 Yamanashi 3 Tokushima 3 Kochi 3 Saga 3 Abolished in 2017 Aomori 4 Iwate 4 Mie 5 Nara 4 Kumamoto 5 Kagoshima 5 Abolished in 2022 Miyagi 6 Fukushima 5 Niigata 6 Shiga 4 Wakayama 3 Okayama 5 Hiroshima 7 Yamaguchi 4 Ehime 4 Nagasaki 4