Tokyo 12th district

Tokyo 12th District
Tokyo 12th District
Parliamentary constituency ; for the Japanese House of Representatives
	Numbered map of inner Tokyo single-member districts
Prefecture	Tokyo
Proportional District	Tokyo
Current constituency
Created	1994
Seats	One
Party	Komeito
Representative	Mitsunari Okamoto
Wards	Adachi, Kita, parts of Itabashi and Toshima

Last updated August 08, 2024

Tokyo's 12th district is a single-member constituency of the House of Representatives, the lower house of the national Diet of Japan.^[1]

List of Representatives

Election	Representative
1996 ^[3]	Eita Yashiro [ ja ]	Liberal Democratic
2000 ^[4]	Eita Yashiro [ ja ]	Liberal Democratic
2003 ^[5]	Akihiro Ota	Komeito
2005 ^[6]	Akihiro Ota	Komeito
2009 ^[7]	Ai Aoki	Democratic
		People's Life First
		Tomorrow
2012 ^[8]	Akihiro Ota	Komeito
2014 ^[9]
2017 ^[10]
2021 ^[11]	Mitsunari Okamoto	Komeito

Election results

2021 ^[11]
Party		Candidate	Votes	%	±%
	Komeito (endorsed by LDP)	Mitsunari Okamoto (PR seat incumbent)	101,020	39.88
	Innovation	Tsukasa Abe [ ja ] (won PR seat)	80,323	31.71	New
	Communist	Saori Ikeuchi	71,948	28.41
Majority			20,697	8.17
Registered electors			462,732
Turnout				57.45	4.98
	Komeito hold

2017 ^[10]
Party		Candidate	Votes	%	±%
	Komeito (endorsed by LDP)	Akihiro Ota (incumbent)	112,597	51.64
	Communist	Saori Ikeuchi (PR seat incumbent)	83,544	38.32
	Assembly for Zero Parliamentary Compensation	Masaru Nakamura	21,892	10.04	New
Majority			29,053	13.32
Registered electors			460,263
Turnout				52.47	3.35
	Komeito hold

2014 ^[9]
Party		Candidate	Votes	%	±%
	Komeito (endorsed by LDP)	Akihiro Ota (incumbent)	88,499	41.64
	Communist	Saori Ikeuchi (won PR seat)	44,721	21.04
	People's Life	Ai Aoki (PR seat incumbent)	40,067	18.85	New
	Future Generations	Toshio Tamogami	39,233	18.46	New
Majority			43,778	20.60
Registered electors			398,205
Turnout				56.04	6.94
	Komeito hold

2012 ^[8]
Party		Candidate	Votes	%	±%
	Komeito (endorsed by LDP)	Akihiro Ota	114,052	51.43
	Tomorrow (endorsed by Daichi)	Ai Aoki (incumbent) (won PR seat)	56,432	25.45	New
	Communist	Saori Ikeuchi	41,934	18.91
	Happiness Realization	Masami Hattori	9,359	4.22
Majority			57,620	25.98
Registered electors			394,907
Turnout				62.98	6.08
	Komeito gain from Tomorrow

2009 ^[7]
Party		Candidate	Votes	%	±%
	Democratic (endorsed by PNP)	Ai Aoki	118,753	45.20
	Komeito (endorsed by LDP)	Akihiro Ota (incumbent)	108,679	41.37
	Communist	Saori Ikeuchi	31,475	11.98
	Happiness Realization	Hideyuki Yokuni [ ja ]	3,813	1.45	New
Majority			10,074	3.83
Registered electors			393,158
Turnout				69.06	1.26
	Democratic gain from Komeito

2005 ^[6]
Party		Candidate	Votes	%	±%
	Komeito	Akihiro Ota (incumbent)	109,636	43.18
	Democratic	Yukihisa Fujita (PR seat incumbent)	73,943	29.12
	Independent	Eita Yashiro [ ja ] (PR seat incumbent)	44,279	17.44	New
	Communist	Ken Nonoyama	26,068	10.27
Majority			35,693	14.06
Turnout				67.80
	Komeito hold

2003 ^[5]
Party		Candidate	Votes	%	±%
	Komeito	Akihiro Ota (PR seat incumbent)	98,700	44.05	New
	Democratic	Yukihisa Fujita (won PR seat)	95,110	42.45
	Communist	Mitsuo Yamagishi	30,251	13.50
Majority			3,590	1.60
Turnout
	Komeito gain from Liberal Democratic

2000 ^[4]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Eita Yashiro [ ja ] (incumbent)	90,208	40.73
	Democratic	Yukihisa Fujita (PR seat incumbent)	64,913	29.31	New
	Communist	Mitsuo Yamagishi	45,482	20.53
	Liberal League	Shinichiro Kurimoto (Tokyo 3rd incumbent)	20,902	9.44	New
Majority			25,295	11.42
Turnout
	Liberal Democratic hold

1996 ^[3]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Eita Yashiro [ ja ]	61,461	28.41	New
	New Frontier	Tamaki Sawa [ ja ]	60,289	27.87	New
	Communist	Kohei Īda	45,858	21.20	New
	Democratic	Muneharu Wada [ ja ]	38,785	17.93	New
	Independent	Kennei Yasuda	5,501	2.54	New
	New Socialist	Eiko Tomiyama	4,456	2.06	New
Majority			1,172	0.54
Turnout
	Liberal Democratic win (new seat)

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References

↑ "総務省｜平成28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". 総務省 (in Japanese). Retrieved 2021-12-15.
↑ "岡田克也君_衆議院". www.shugiin.go.jp. Retrieved 2022-06-01.
1 2 "第41回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.
1 2 "第42回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.
1 2 "第43回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.
1 2 "第44回衆議院議員選挙 - 東京12区". the Asahi Shinbun (in Japanese). Retrieved 2023-10-29.
1 2 "第45回衆議院議員選挙 - 東京12区". the Asahi Shinbun (in Japanese). Retrieved 2023-10-29.
1 2 "開票結果小選挙区東京". Yomiuri Shimbun (in Japanese). Retrieved 2023-10-29.
1 2 "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 2023-10-29.
1 2 "2017衆院選:衆議院選挙:選挙アーカイブス:NHK選挙WEB". Yomiuri Shimbun (in Japanese). Retrieved 2023-10-08.
1 2 "2021年衆議院総選挙　東京12区". NHK (in Japanese). Retrieved 2023-10-08.

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[1] "総務省｜平成28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". 総務省 (in Japanese). Retrieved 2021-12-15.

[2] "岡田克也君_衆議院". www.shugiin.go.jp. Retrieved 2022-06-01.

[elect96-3] 1 2 "第41回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.

[elect00-4] 1 2 "第42回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.

[elect03-5] 1 2 "第43回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.

[elect05-6] 1 2 "第44回衆議院議員選挙 - 東京12区". the Asahi Shinbun (in Japanese). Retrieved 2023-10-29.

[elect09-7] 1 2 "第45回衆議院議員選挙 - 東京12区". the Asahi Shinbun (in Japanese). Retrieved 2023-10-29.

[elect12-8] 1 2 "開票結果小選挙区東京". Yomiuri Shimbun (in Japanese). Retrieved 2023-10-29.

[elect14-9] 1 2 "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 2023-10-29.

[elect17-10] 1 2 "2017衆院選:衆議院選挙:選挙アーカイブス:NHK選挙WEB". Yomiuri Shimbun (in Japanese). Retrieved 2023-10-08.

[elect21-11] 1 2 "2021年衆議院総選挙　東京12区". NHK (in Japanese). Retrieved 2023-10-08.

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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 : Fukushiro Nukaga, Ibaraki 2nd Vice Speaker of the House of Representatives of Japan : Banri Kaieda, Tokyo PR
Hokkaidō (8 block seats, 12 district seats)	Hokkaidō 1 2 3 4 5 6 7 8 9 10 11 12
Tōhoku (12 block seats, 23 district 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 (19 block seats, 32 district 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 (23 block seats, 33 district 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 (19 block seats, 25 district 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 (10 block seats, 19 district 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 (21 block seats, 32 district 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 (28 block seats, 47 district 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 (10 block seats, 20 district seats)	Tottori 1 2 Shimane 1 2 Okayama 1 2 3 4 Hiroshima 1 2 3 4 5 6 Yamaguchi 1 2 3
Shikoku (6 block seats, 11 district seats)	Tokushima 1 2 Kagawa 1 2 3 Ehime 1 2 3 Kōchi 1 2
Kyūshū (20 block seats, 35 district 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
Districts eliminated in the 2002 reapportionments	Hokkaido 13 Yamagata 4 Shizuoka 9 Shimane 3 Oita 4
Districts eliminated in the 2013 reapportionments	Fukui 3 Yamanashi 3 Tokushima 3 Kochi 3 Saga 3
Districts eliminated in the 2017 reapportionments	Aomori 4 Iwate 4 Mie 5 Nara 4 Kumamoto 5 Kagoshima 5
Districts eliminated in the 2022 reapportionments	Miyagi 6 Fukushima 5 Niigata 6 Shiga 4 Wakayama 3 Okayama 5 Hiroshima 7 Yamaguchi 4 Ehime 4 Nagasaki 4

Tokyo 12th District
Parliamentary constituency for the Japanese House of Representatives
Numbered map of inner Tokyo single-member districts
Prefecture	Tokyo
Proportional District	Tokyo
Current constituency
Created	1994
Seats	One
Party	Komeito
Representative	Mitsunari Okamoto
Wards	Adachi, Kita, parts of Itabashi and Toshima

Tokyo 12th district

Contents

List of Representatives

Election results

Related Research Articles

References