Aichi 13th district

Aichi 13th district
Aichi 13th district
Parliamentary constituency; for the Japanese House of Representatives
	Numbered map of Aichi Prefecture single-member districts
Prefecture	Aichi
Proportional District	Tokai
Electorate	423,363
Current constituency
Created	1994
Seats	One
Party	LDP
Representative	Taku Ishii
Municipalities	Hekinan, Kariya, Anjō, Chiryū, and Takahama.

PrefectureAichi

Proportional DistrictTokai

Electorate423,363^[1]

Created1994

Aichi 13th district (愛知県第13区, Aichi-ken dai-ju-sanku or simply 愛知13区, Aichi ju-sanku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Aichi Prefecture.

[1]

Election	Representative	Party
1996^[4]	Satoshi Shima [ja]		New Frontier
			New Fraternity
			Democratic
2000^[5]	Hideaki Ōmura		Liberal Democratic
2003^[6]
2005^[7]
2009^[8]	Kensuke Ōnishi		Democratic
2012^[9]	Sei Ōmi [ja]		Liberal Democratic
2014^[10]	Kensuke Ōnishi		Democratic
2014^[10]			Democratic
2017^[11]			Kibō no Tō
2017^[11]
		DPP
2021^[12]			CDP
2024			CDP
2026	Taku Ishii		LDP

Party		Candidate	Votes	%	±%
	LDP	Taku Ishii	151,944	58.6	21.8
	Centrist Reform	Kensuke Onishi	58.084	36.4	19.9
	JCP	Kiyohiro Ushita	12,910	5.0	1.9
Registered electors			421,495
Turnout				63.44	3.58
	LDP gain from Centrist Reform

Party		Candidate	Votes	%	±%
	CDP	Kensuke Ōnishi (incumbent)	137,944	56.31	3.59
	Liberal Democratic	Taku Ishii	90,214	36.83	10.45
	Communist	Kiyohiro Ushita	16,818	6.87	New
Majority			47,730	19.48	14.014
Registered electors			422,024
Turnout			244,976	59.86	1.70
	CDP hold

Party		Candidate	Votes	%	±%
	CDP	Kensuke Ōnishi (incumbent)	134,033	52.72	New
	Liberal Democratic (endorsed by Komeito)	Taku Ishii (won PR seat)	120,203	47.28
Majority			13,830	5.44
Registered electors			422,731
Turnout				61.56	1.05
	CDP hold

Party		Candidate	Votes	%	±%
	Kibō no Tō	Kensuke Ōnishi (incumbent)	116,471	47.42	New
	Liberal Democratic (endorsed by Komeito)	Sei Ōmi [ja] (PR seat incumbent) (won PR seat)	109,581	44.61
	Communist	Ryoichi Shimojima	19,589	7.97
Majority			6,890	2.81
Registered electors			416,667
Turnout				60.51	0.04
	Kibō no Tō hold

Aichi 13th district

since 1994

List of representatives

Election results

2026

2024

2021

2017

2014

2012

2009

2005

2003

2000

1996

References

Related Articles

Timelines

Top Qs

Fact Checks

Aichi 13th district
Parliamentary constituency for the Japanese House of Representatives
Numbered map of Aichi Prefecture single-member districts
Prefecture	Aichi
Proportional District	Tokai
Electorate	423,363^[1]
Current constituency
Created	1994
Seats	One
Party	LDP
Representative	Taku Ishii
Municipalities	Hekinan, Kariya, Anjō, Chiryū, and Takahama.

Party		Candidate	Votes	%	±%
	Democratic	Kensuke Ōnishi (PR seat incumbent)	116,652	49.62
	Liberal Democratic (endorsed by Komeito)	Sei Ōmi [ja] (incumbent) (won PR seat)	101,144	43.03
	Communist	Isao Miyaji	17,285	7.35
Majority			15,508	6.59
Registered electors			399,518
Turnout				60.55	3.59
	Democratic gain from LDP

Party		Candidate	Votes	%	±%
	Liberal Democratic (endorsed by Komeito)	Sei Ōmi [ja]	98,670	40.31
	Democratic (endorsed by PNP)	Kensuke Ōnishi (incumbent) (won PR seat)	97,187	39.70
	Tomorrow (endorsed by Daichi)	Kōki Kobayashi	37,405	15.28	New
	Communist	Isao Miyaji	11,514	4.70
Majority			1,483	0.61
Registered electors			394,757
Turnout				64.14	11.55
	LDP gain from Democratic

Party		Candidate	Votes	%	±%
	Democratic	Kensuke Ōnishi	154,779	53.79
	Liberal Democratic	Hideaki Ōmura (incumbent) (won PR seat)	128,995	44.83
	Happiness Realization	Takashi Murota	3,950	1.37	New
Majority			25,784	8.96
Registered electors			386,936
Turnout				75.69	3.76
	Democratic gain from LDP

Party		Candidate	Votes	%	±%
	Liberal Democratic	Hideaki Ōmura (incumbent)	139,022	53.08
	Democratic	Satoshi Shima [ja] (PR seat incumbent)	109,593	41.84
	Communist	Ken Nakamura	13,311	5.08
Majority			29,429	11.24
Registered electors			369,801
Turnout				71.93	5.63
	LDP hold

Party		Candidate	Votes	%
	Liberal Democratic	Hideaki Ōmura (incumbent)	114,092	48.44
	Democratic	Satoshi Shima [ja] (PR seat incumbent) (won PR seat)	109,670	46.56
	Communist	Makoto Takabayashi	11,765	5.00
Majority			4,422	1.88
Registered electors			361,655
Turnout				66.30
	LDP hold

Party		Candidate	Votes	%	±%
	Liberal Democratic	Hideaki Ōmura (PR seat incumbent)	104,731	45.90
	Democratic	Satoshi Shima [ja] (incumbent) (won PR seat)	104,392	45.75	New
	Communist	Kanehiko Miyagawa	15,880	6.96
	Liberal League	Ken Shirai	3,164	1.39	New
Majority			339	0.15
Turnout
	LDP gain from Democratic

Party		Candidate	Votes	%	±%
	New Frontier	Satoshi Shima [ja]	87,991	46.78	New
	Liberal Democratic	Hideaki Ōmura (won PR seat)	80,629	42.86	New
	Communist	Makoto Takabayashi	19,484	10.36	New
Majority			7,362	3.92
Turnout
	New Frontier win (new seat)

v t e Aichi's electoral districts for the Diet of Japan
FPTP "small" districts (1996–present) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PR part of the Tōkai PR block (21 seats) House of Councillors At-large (15→16 Representatives, 6→8 Councillors)
SNTV "medium-sized" districts (1947–1993) 1 2 3 4 5 6 (19→22 Representatives, 6 Councillors)
Limited voting "large" districts (1946) 1 2 (18 Representatives)
SNTV "medium-sized" districts (1928–1942) 1 2 3 4 5 (17 Representatives)
FPTP/SNTV "small" districts (1920–1924) 1 2 3 4 5 6 7 8 9 10 11 12 13 (17 Representatives)
SNTV "large" districts (1902–1917) Nagoya city counties (gunbu) (13 Representatives)
FPTP/bloc voting "small" districts (1890–1898) 1 2 3 4 5 6 7 8 9 10 11 (11 Representatives)

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