Tokyo 4th district

Tokyo 4th district (東京都第4区 Tōkyō-to dai 4-ku) is a single-member constituency of the House of Representatives, the lower house of the national Diet of Japan. It is located in southern Tokyo city and consists of much of Ōta Ward (Kamata, Ōmori, Haneda.) The seat is held by Masaaki Taira, a member of the Liberal Democratic Party since 2012.

Tokyo 4th District
Parliamentary constituency for the Japanese House of Representatives
Numbered map of inner Tokyo single-member districts
Prefecture	Tokyo
Proportional District	Tokyo
Electorate	425,428 (2022)
Major settlements	Kamata, Ōmori, Haneda
Current constituency
Created	1994
Party	LDP
Representative	Masaaki Taira
Tokyo special Wards	Much of Ōta

As of September 2022, 425,428 voters were registered in the district.

List of Representatives

Representatives	Party		Dates	Notes
Shoukei Arai		Independent	1996–1998	Redistricted from the former 2nd district. Died in office.
Kensaku Morita		LDP	1998–2000
		Independent	2000	Re-elected in 2000.
		LDP	2000–2003	Did not run for re-election.
Kazuyoshi Nakanishi		LDP	2003–2005	Resigned mid-term.
Masaaki Taira		LDP	2005–2009	Re-elected in the Tokyo PR block.
Fujita Norihiko		DPJ	2009–2012	Lost re-election.
Masaaki Taira		LDP	2012– present	Re-elected in 2014, 2017, 2021.

Election Results

2024

Party		Candidate	Votes	%	±%
	LDP	Masaaki Taira
	DPP	Masae Ido
	Ishin	Masatoshi Ishikawa
	JCP	Tomoyuki Tanigawa
	Sanseitō	Yūta Shiodera
Turnout

2021 Japanese general election

Party		Candidate	Votes	%	±%
	LDP	Masaaki Taira (Incumbent) (Endorsed by Komeito)	128,708	51.5	0.7
	JCP	Tomoyuki Tanigawa	62,286	24.9	13.6
	Ishin	Hayashi Tomoko	58,891	23.6	New
Turnout			474,029	54.4	3.7
	LDP hold

2017 Japanese general election

Party		Candidate	Votes	%	±%
	LDP	Masaaki Taira (Incumbent) (Endorsed by Komeito)	115,239	50.8	0.5
	CDP	Masae Ido	53,480	23.3	New
	Kibō no Tō	Michiyo Namba	35,352	15.4	New
	JCP	Kohei Aoyama	26,037	11.3	6.6
Turnout			466,486	50.7	1.5
	LDP hold

2014 Japanese general election

Party		Candidate	Votes	%	±%
	LDP	Masaaki Taira (Incumbent) (Endorsed by Komeito)	109,377	50.3	10.9
	Democratic	Fujita Norihiko (Endorsed by Japan Innovation Party)	48,861	22.5	5.2
	JCP	Junpei Yamamoto	38,925	17.9	8.1
	Japanese Kokoro	Hirekazu Inubushi	20,108	18.4	New
Turnout			432,784	52.3	7.7
	LDP hold

2012 Japanese general election

Party		Candidate	Votes	%	±%
	LDP	Masaaki Taira (Endorsed by Komeito)	96,810	39.4	1.9
	Restoration	Hirekazu Inubushi	44,999	18.3	New
	Democratic	Fujita Norihiko (Incumbent) (Endorsed by People's New Party)	42,424	17.3	20.3
	Your	Masashi Hirose	34,902	14.2	New
	JCP	Junpei Yamamoto	24,167	9.8	0.9
	Euthanasia party	Hidemitsu Sano	2,603	1.1	New
Turnout			427,018	60.0	4.2
	LDP gain from Democratic

2009 Japanese general election

Party		Candidate	Votes	%	±%
	Democratic	Fujita Norihiko	100,067	37.5	3.8
	LDP	Masaaki Taira (Incumbent) (Endorsed by Komeito)	93,583	35.1	11.6
	Independent	Noboru Usami	46,107	17.3	New
	JCP	Kaname Shibuya	23,622	8.9	0.9
	Happiness Realization	Kikue Shimokawa	3,323	1.3	New
Turnout			426,496	64.2	0.3
	Democratic gain from LDP

2005 Japanese general election

Party		Candidate	Votes	%	±%
	LDP	Masaaki Taira (Incumbent)	119,812	46.7	5.3
	Democratic	Usami Noboru	86,354	33.7	1.9
	JCP	Fuminori Sato	25,077	9.8	1.1
	Independent	Kazuyoshi Nakanishi	19,955	7.8	New
	Independent	Sato Hiromi	5,313	2.1	New
Turnout			N/A	63.9	4.0
	LDP hold

2003 Japanese general election

Party		Candidate	Votes	%	±%
	LDP	Kazuyoshi Nakanishi	90,693	41.4	3.0
	Democratic	Usami Noboru	77,953	35.6	15.0
	New Conservative	Eriko Yamatani	26,707	12.2	New
	JCP	Tomio Yamaguchi	23,942	10.9	4.2
Turnout			N/A	59.9	2.6
	LDP hold

2000 Japanese general election

Party		Candidate	Votes	%	±%
	Independent	Kensaku Morita (Incumbent)	92,711	38.4	4.0
	Komeito	Otohiko Endo	59,487	24.7	New
	Democratic	Usami Noboru	49,662	20.6	New
	JCP	Michinobu Tokutome	36,498	15.1	9.0
	Liberal League	Miyuki Mitsuda	2,925	3.2	New
Turnout			N/A	62.5	2.8
	Independent hold

1998 House of Representatives By-Election

Party		Candidate	Votes	%	±%
	LDP	Kensaku Morita	50,242	34.4	11.7
	Independent	Jin Matsubara	35,521	24.3	New
	JCP	Michinobu Tokutome	35,150	24.1	9.3
	Independent	Tetsu Ueda	18,305	12.5	New
	Liberal	Hiroyasu Satake	6,254	4.3	New
	Independent	Setsuo Yamaguchi	662	0.6	New
Turnout			N/A	N/A	N/A
	LDP gain from Independent

1996 Japanese general election

Party		Candidate	Votes	%	±%
	Independent	Shoukei Arai	78,805	38.2	New
	LDP	Keigo Ouchi	46,840	22.7	New
	JCP	Mitsuo Kobana	30,522	14.8	New
	Democratic	Akiko Nakata	23,260	11.3	New
	Independent	Tetsu Ueda	21,319	10.3	New
	Independent	Osamu Kono	3,367	1.6	New
	New Socialist	Naemi Kurosawa	2,418	1.2	New
Turnout			N/A	59.7	New
	Independent win (new seat)