Tokyo 15th district

Tokyo 15th District
Tokyo 15th District
東京都第15区
Parliamentary constituency; for the Japanese House of Representatives
Prefecture	Tokyo
Proportional Block	Tokyo
Electorate	427,908 (as of September 2022)
Current constituency
Created	1994
Seats	One
Representative	Natsumi Sakai

Tokyo 15th District (東京都第15区, Tokyo-to jugo-ku) is an electoral district of the Japanese House of Representatives. The district was established in 1994 as part of the change to single-member districts, and it is currently represented by Natsumi Sakai, member of the CDP.

Areas covered

Current district

As of 13 January 2023, the areas covered by this district are as follows:

Kōtō, since the creation of the district

Elected representatives


Representative		Years served	Notes
Koji Kakizawa	LDP	1996–1999	Redistricted from the former 15th district. Resigned his seat to run in the 1999 Tokyo gubernatorial election.^[2]
Ben Kimura	LDP	1999–2000	Lost re-election.
Koji Kakizawa	Ind.	2000–2003	Retired from politics.
Ben Kimura	LDP	2003–2009	Lost re-election.
Shozo Azuma	DPJ	2009–2012
	PLF	2012
	TPJ	2012	Lost re-election.
Mito Kakizawa	Your	2012–2013
	Ind.	2013
	Unity	2013–2014
	JIP	2014–2016	Re-elected in 2014.
	DP	2016–2017
	Kibō	2017	Re-elected in the Tokyo PR block.
Tsukasa Akimoto	LDP	2017–2021	Resigned mid-term.
Mito Kakizawa	Ind.	2021–2024	Resigned mid-term.^[3]
Natsumi Sakai	CDP	2024–

Election results

‡ - Also ran in the Tokyo PR district election

‡‡ - Also ran and won in the Tokyo PR district election

2024
Party		Candidate
	CDP	Natsumi Sakai
	LDP	Kōki Oozora
	JCP	Azuma Kozutsumi
	Independent	Genki Sudo
	Independent	Yui Kanazawa
Turnout

The 2024 by-election in the constituency was called following the arrest and a court ruling of the former LDP state minister Mito Kakizawa,^[4] who was arrested and found guilty on vote buying charges.^[5]^[6]

The voter turnout was 40.70%, 18.03% lower than the previous election's 58.73%, marking the constituency's lowest.^[7]

2024 by-election^[8]
Party		Candidate	Votes	%	±%
	CDP	Natsumi Sakai (Supported by the JCP, SDP)	49,476	29.0	4.2
	Independent	Genki Sudo (Endorsed by Reiwa Shinsengumi)	29,669	17.4	New
	Ishin	Yui Kanazawa (Endorsed by FEFA)	28,461	16.7	2.1
	CPJ	Akari Iiyama	24,264	14.2	New
	Independent	Hirotada Ototake (Endorsed by FnK, DPP)	19,655	11.5	New
	Sanseitō	Rina Yoshikawa	8,639	5.1	New
	Independent	Tsukasa Akimoto	8,061	4.7	New
	Anti-NHK	Katsuya Fukunaga	1,410	0.8	New
	Tsubasa	Ryosuke Nemoto	1,110	0.7	New
Registered electors			430,285
Turnout			175,126	40.7	17.0
	CDP gain from Independent		Swing

2021^[9]
Party		Candidate	Votes	%	±%
	Independent	Mito Kakizawa (incumbent - Tokyo PR) (endorsed by the LDP)	76,251	32.0	*New*
	CDP	Masae Ido^‡ (endorsed by the SDP)	58,978	24.8	New
	Ishin	Yui Kanazawa^‡	44,882	18.8	New
	Independent	Hiroshi Imamura (endorsed by the LDP)	26,628	11.2	New
	Independent	Takashi Ino	17,514	7.4	0.3
	Japan First	Makoto Sakurai	9,449	4.0	New
	Independent	Koji Yoshida	4,608	1.9	New
Registered electors			424,125
Turnout			249,089	58.7	3.1
	Independent gain from LDP		Swing

2017^[10]
Party		Candidate	Votes	%	±%
	LDP	Tsukasa Akimoto^‡ (incumbent - Tokyo PR) (endorsed by Komeito)	101,155	45.6	5.6
	Kibō no Tō	Mito Kakizawa^‡‡ (incumbent)	70,325	31.7	New
	JCP	Toshio Yoshida	34,943	15.7	1.1
	Independent	Takashi Ino	15,667	7.4	2.9
Registered electors			412,336
Turnout			229,218	55.6	0.4
	LDP gain from Innovation		Swing	7.3

2014^[11]
Party		Candidate	Votes	%	±%
	Innovation	Mito Kakizawa^‡ (incumbent) (endorsed by the JRP)	88.507	41.3	*New*
	LDP	Tsukasa Akimoto^‡‡ (incumbent - Tokyo PR) (endorsed by Komeito)	85,714	40.0	9.0
	JCP	Toshio Yoshida	31,384	14.6	6.8
	Independent	Takashi Ino	8,759	4.1	New
Registered electors			395,474
Turnout			221,584	56.0	8.1
	Innovation gain from Your		Swing

2012^[12]
Party		Candidate	Votes	%	±%
	Your	Mito Kakizawa^‡ (incumbent - Tokyo PR) (endorsed by the JRP)	88,222	36.9	21.2
	LDP	Tsukasa Akimoto^‡‡ (endorsed by Komeito)	74,159	31.0	1.3
	Democratic	Mieko Tanaka^‡	29,355	12.3	30.1
	JCP	Toshio Yoshida	18,667	7.8	1.1
	Tomorrow	Shozo Azuma^‡ (incumbent) (endorsed by the NDP)	15,667	7.4	New
Registered electors			386,411
Turnout			247,496	64.1	3.2
	Your gain from Democratic		Swing	10.6

2009^[13]
Party		Candidate	Votes	%	±%
	Democratic	Shozo Azuma^‡	105,131	42.4	7.2
	LDP	Ben Kimura^‡ (incumbent) (endorsed by Komeito)	80,054	32.3	22.2
	Your	Mito Kakizawa^‡‡	38.808	15.7	New
	JCP	Toshio Yoshida	22,176	8.9	1.6
Registered electors			375,924
Turnout			229,218	67.3	0.8
	Democratic gain from LDP		Swing	6.7

2005^[14]
Party		Candidate	Votes	%	±%
	LDP	Ben Kimura^‡ (incumbent - Tokyo PR) (endorsed by Komeito)	123,021	54.4	5.6
	Democratic	Shozo Azuma^‡ (incumbent)	79,621	35.2	5.2
	JCP	Toshio Yoshida	23,659	10.5	0.5
Registered electors			348,023
Turnout			231,331	66.5	6.1
	LDP hold		Swing	6.5

2003^[15]
Party		Candidate	Votes	%	±%
	LDP	Ben Kimura^‡	69,164	35.4	7.3
	Democratic	Shozo Azuma^‡ (incumbent - Tokyo PR)	58,616	30.0	15.3
	Independent Society	Koji Kakizawa	47,843	24.5	New
	JCP	Haruta Atsuyuki	19,610	10.0	5.6
Registered electors			332,572
Turnout			200,707	60.4	2.1
	LDP gain from Independent		Swing	15.1

2000^[16]
Party		Candidate	Votes	%	±%
	Independent	Koji Kakizawa	54,298	28.8	5.6
	LDP	Ben Kimura^‡ (incumbent)	52,892	28.1	22.9
	JCP	Haruta Atsuyuki	29,412	15.6	2.9
	Democratic	Tatsuharu Mawatari^‡	27,654	14.7	15.8
	Liberal	Shozo Azuma^‡‡	22,800	12.1	New
	Independent	Kaoru Kondo	1,302	0.7	New
Registered electors			309,356
Turnout			193,348	62.5
	Independent gain from LDP		Swing	N/A

1999 by-election^[17]
Party		Candidate	Votes	%	±%
	LDP	Ben Kimura	89,605	51.0	14.6
	Democratic	Kazuko Yoshida	53,490	30.5	New
	JCP	Muneharu Fusa	32,541	18.5	0.8
Registered electors
Turnout
	LDP hold		Swing	7.3

1996^[18]
Party		Candidate	Votes	%	±%
	LDP	Koji Kakizawa^‡ (incumbent - former Tokyo 6th)	61,701	36.4	*New*
	New Frontier	Akira Kuroyanagi	46,969	27.7	New
	JCP	Muneharu Fusa	29,901	17.7	New
	Democratic	Noboru Osawa	28,181	16.6	New
	Independent	Yoshihisa Kitaura	2,629	1.6	New
Registered electors			293,912
Turnout			173,731	59.1	New
	LDP win (new seat)

References

^ "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.
^ "Kakizawa, ex-foreign minister, dies". The Japan Times. 2009-01-28. Retrieved 2023-01-13.
^ NEWS, KYODO. "Ex-LDP member quits as lawmaker amid alleged election law violation". Kyodo News+. Retrieved 2024-03-27.
^ "Japan's opposition party CDPJ sweeps 3 by-elections in Lower House". Asia News Network. 14 March 2024. Retrieved 11 May 2024.
^ "Japanese lawmaker Mito Kakizawa arrested over vote-buying allegations". Kyodo News+. 28 December 2023. Retrieved 11 May 2024.
^ "Ex-senior vice justice minister Mito Kakizawa found guilty of vote buying". The Japan Times. 2024-03-14. Retrieved 2024-05-11.
^ "【衆院3補選詳報】東京は酒井菜摘氏「真っ当な政治作る」小池百合子知事の姿は？立民3－0自民：東京新聞 TOKYO Web". 東京新聞 TOKYO Web (in Japanese). Retrieved 2024-05-11.
^ "衆院補選東京15区 | Nhk選挙Web" (in Japanese). NHK. Retrieved 28 April 2024.
^ "東京15区 - 第49回衆議院議員選挙" [Tokyo 15th District - 49th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第48回衆議院議員選挙" [Tokyo 15th District - 48th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第47回衆議院議員選挙" [Tokyo 15th District - 47th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第46回衆議院議員選挙" [Tokyo 15th District - 46th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第45回衆議院議員選挙" [Tokyo 15th District - 45th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第44回衆議院議員選挙" [Tokyo 15th District - 44th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第43回衆議院議員選挙" [Tokyo 15th District - 43rd House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第42回衆議院議員選挙" [Tokyo 15th District - 42nd House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京2区・東京15区・静岡8区 - 第41回衆議院議員補欠選挙" [Tokyo 2nd District - Tokyo 15th District - Shizuoka 8th District - 41st House of Representatives by-election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
^ "東京15区 - 第41回衆議院議員選挙" [Tokyo 15th District - 41st House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[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] "Kakizawa, ex-foreign minister, dies". The Japan Times. 2009-01-28. Retrieved 2023-01-13.

[3] NEWS, KYODO. "Ex-LDP member quits as lawmaker amid alleged election law violation". Kyodo News+. Retrieved 2024-03-27.

[4] "Japan's opposition party CDPJ sweeps 3 by-elections in Lower House". Asia News Network. 14 March 2024. Retrieved 11 May 2024.

[5] "Japanese lawmaker Mito Kakizawa arrested over vote-buying allegations". Kyodo News+. 28 December 2023. Retrieved 11 May 2024.

[6] "Ex-senior vice justice minister Mito Kakizawa found guilty of vote buying". The Japan Times. 2024-03-14. Retrieved 2024-05-11.

[7] "【衆院3補選詳報】東京は酒井菜摘氏「真っ当な政治作る」小池百合子知事の姿は？立民3－0自民：東京新聞 TOKYO Web". 東京新聞 TOKYO Web (in Japanese). Retrieved 2024-05-11.

[8] "衆院補選東京15区 | Nhk選挙Web" (in Japanese). NHK. Retrieved 28 April 2024.

[9] "東京15区 - 第49回衆議院議員選挙" [Tokyo 15th District - 49th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[10] "東京15区 - 第48回衆議院議員選挙" [Tokyo 15th District - 48th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[11] "東京15区 - 第47回衆議院議員選挙" [Tokyo 15th District - 47th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[12] "東京15区 - 第46回衆議院議員選挙" [Tokyo 15th District - 46th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[13] "東京15区 - 第45回衆議院議員選挙" [Tokyo 15th District - 45th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[14] "東京15区 - 第44回衆議院議員選挙" [Tokyo 15th District - 44th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[15] "東京15区 - 第43回衆議院議員選挙" [Tokyo 15th District - 43rd House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[16] "東京15区 - 第42回衆議院議員選挙" [Tokyo 15th District - 42nd House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[17] "東京2区・東京15区・静岡8区 - 第41回衆議院議員補欠選挙" [Tokyo 2nd District - Tokyo 15th District - Shizuoka 8th District - 41st House of Representatives by-election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

[18] "東京15区 - 第41回衆議院議員選挙" [Tokyo 15th District - 41st House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.

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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, 21 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, 33 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, 36 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, 30 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, 18 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, 33 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, 45 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, 17 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, 10 district seats)	Tokushima 1 2 Kagawa 1 2 3 Ehime 1 2 3 Kōchi 1 2
Kyūshū (20 block seats, 34 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