Tokyo 21st district

Tokyo 21st district (東京都第21区, Tokyo-to dai-ni-juikku or simply 東京21区, Tokyo-ni-juikku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Tokyo.

Tokyo 21st District
Parliamentary constituency for the Japanese House of Representatives
Numbered map of Tokyo single-member districts
Prefecture	Tokyo
Proportional District	Tokyo
Electorate	386,559[1]
Current constituency
Created	1994
Seats	One
Party	LDP
Representative	Kiyoshi Odawara [ja]
Municipalities	The eastern part of Hachiōji, Tachikawa and Hino

The incumbent candidate, former Foreign Affairs Senior Vice Minister Kiyoshi Odawara, was not endorsed by the LDP because of involvement in the 2023–2024 Japanese slush fund scandal and ran as an independent candidate.^[2]

List of representatives

Election	Representative	Party		Dates	Notes
1996	Jōji Yamamoto [ja]		DPJ	1996–1998
			DPJ	1998-2000
2000
2000	Etsuko Kawada [ja]		Indep.	2000-2003
2003	Akihisa Nagashima		DPJ	2003–2005
2005	Yuichi Ogawa		LDP	2005–2009
2009	Akihisa Nagashima		DPJ	2009–2014
2012
2014	Kiyoshi Odawara [ja]		LDP	2014-2017
2017	Akihisa Nagashima		Kibō	2017-2018
			Indep.	2018-2019
			LDP	2019-2021
2021	Kiyoshi Odawara		LDP	2021–present

Election results

2024

Party		Candidate	Votes	%	±%
	CDP	Masako Ōkawara (PR incumbent)	90,724	42.14	2.03
	Independent	Kiyoshi Odawara [ja]	69,421	32.24	13.27
	Ishin	Yōko Yamashita	36,642	17.02	2.64
	Sanseitō	Yūichi Mori	18,511	8.60
Turnout			215,298	55.86	1.86

2021^[3]

Party		Candidate	Votes	%	±%
	LDP	Kiyoshi Odawara (incumbent-Tokyo-PR)	112,433	45.51	6.37
	CDP	Masako Ōkawara (incumbent-Northern Kanto-PR) (elected by Tokyo-PR)	99,090	40.11	New
	Ishin	Mitsuaki Takeda [ja]	35,527	14.38	New
Registered electors			438,466
Turnout				57.72	3.54

2017^[4]

Party		Candidate	Votes	%	±%
	Kibō	Akihisa Nagashima (incumbent-Tokyo-PR)	92,356	40.97	New
	LDP	Kiyoshi Odawara (incumbent) (elected by Tokyo-PR)	88,225	39.14	2.45
	SDP	Kensuke Koito	38,195	16.94	7.16
	Indep.	Naoto Amaki [ja]	6,655	2.95	New
Registered electors			429,529
Turnout				54.18	0.09

2014^[5]

Party		Candidate	Votes	%	±%
	LDP	Kiyoshi Odawara (incumbent-Tokyo-PR)	83,984	41.59	10.75
	DPJ	Akihisa Nagashima (incumbent) (elected by Tokyo-PR)	82,351	40.78	4.33
	JCP	Masafumi Yoshioka	35,598	17.63	8.05
Registered electors			383,589
Turnout				54.27	7.79

2012^[6]

Party		Candidate	Votes	%	±%
	DPJ	Akihisa Nagashima (incumbent)	82,831	36.45	21.17
	LDP	Kiyoshi Odawara (elected by Tokyo-PR)	70,070	30.84	1.37
	JRP	Rie Sasaki [ja]	36,734	16.17	New
	JCP	Masafumi Yoshioka	21,762	9.58	1.02
	TP	Yūji Fujita	11,408	5.02	New
	Indep.	Hiroyuki Tanikawa	4,413	1.94	New
Registered electors			381,396
Turnout				62.06	4.56

2009^[7]

Party		Candidate	Votes	%	±%
	DPJ	Akihisa Nagashima (incumbent-Tokyo-PR)	142,418	57.62	16.00
	LDP	Yuichi Ogawa (incumbent)	79,628	32.21	13.86
	JCP	Atsumaro Hoshi	21,155	8.56	2.18
	HRP	Atsushi Yamamoto	3,976	1.61	New
Registered electors			377,839
Turnout				66.62	0.50

2005^[8]

Party		Candidate	Votes	%	±%
	LDP	Yuichi Ogawa	109,310	46.07	11.47
	DPJ	Akihisa Nagashima (incumbent) (elected by Tokyo-PR)	98,749	41.62	2.43
	JCP	Yutaka Tagawa	25,483	10.74	2.36
	Indep.	Yutaka Sogō	3,739	1.58	New
Registered electors			366,405
Turnout				66.12	6.95

2003^[9]

Party		Candidate	Votes	%	±%
	DPJ	Akihisa Nagashima	81,398	39.19	20.65
	LDP	Jōji Hashimoto	71,873	34.60	0.48
	Indep.	Etsuko Kawada [ja] (incumbent)	37,019	17.82	18.78
	JCP	Yutaka Tagawa	17,409	8.38	9.00
Registered electors			360,711
Turnout				59.17	2.47

By-election, October 22, 2000^[10]

Party		Candidate	Votes	%	±%
	Indep.	Etsuko Kawada	51,008	36.60	New
	LDP	Sekikazu Kato	48,883	35.08	0.05
	DPJ	Akihisa Nagashima	25,843	18.54	28.95
	SDP	Teiko Kidō	13,627	9.78	New
Turnout

2000^[11]

Party		Candidate	Votes	%	±%
	DPJ	Jōji Yamamoto [ja]	98,775	47.49	New
	LDP	Sekikazu Kato	73,067	35.13	9.42
	JCP	Yasuo Sugita	36,150	17.38	3.53
Registered electors			348,869
Turnout				61.65

1996^[12]

Party		Candidate	Votes	%	±%
	DPJ	Jōji Yamamoto	55,458	28.91	New
	LDP	Kiyoshi Ozawa [ja] (elected by Tokyo-PR)	49,308	25.71	New
	NFP	Toshiaki Koga [ja]	46,919	24.46	New
	JCP	Emi Iwasa [ja]	40,114	20.91	New
Turnout