Tokyo 20th district

Tokyo 20th District
Tokyo 20th District
東京都第20区
Parliamentary constituency; for the Japanese House of Representatives
Prefecture	Tokyo
Proportional Block	Tokyo
Electorate	419,465 (as of 1 September 2022)
Current constituency
Created	1994
Seats	One
Party	LDP
Representative	Seiji Kihara

Tokyo 20th District (東京都第20区, Tokyo-to dai-niju-ku) is an electoral district of the Japanese House of Representatives. The district was created in 1994 as part of the move to single-member districts that same year, and the district is currently represented by the Liberal Democratic Party's Seiji Kihara.

Areas covered[edit]

As of 13 January 2023, the areas covered by this district area as follows:^[2]^[3]

Since its creation in 1994, the borders of this district have so far not been changed.

Elected representatives[edit]


Representative		Years served	Notes
Yuriko Ono	NFP	1996-2000
Koichi Kato	DPJ	2000-2005
Seiji Kihara	LDP	2005-2009
Koichi Kato	DPJ	2009-2012
Seiji Kihara	LDP	2012-	Incumbent

Election results[edit]

‡ - Also ran in the Tokyo PR district

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

2021^[4]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Seiji Kihara^‡ (incumbent) (endorsed by Komeito)	121,621	52.6	2.7
	Communist	Toru Miyamoto^‡ (incumbent - Tokyo PR) (endorsed by the SDP)	66,516	28.8	2.0
	Innovation	Junichiro Maeda^‡	43,089	18.6	New
Registered electors			418,245
Turnout			237,438	56.8	3.2
	Liberal Democratic hold		Swing	2.5

2017^[5]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Seiji Kihara^‡ (incumbent) (endorsed by Komeito)	107,686	49.9	2.2
	Communist	Toru Miyamoto^‡ (incumbent - Tokyo PR) (endorsed by the SDP)	57,741	26.8	2.5
	Kibō no Tō	Akira Shikano^‡	50,439	23.4	New
Registered electors			415,565
Turnout			222,909	53.6	0.9
	Liberal Democratic hold		Swing	7.0

2014^[6]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Seiji Kihara^‡ (incumbent) (endorsed by Komeito)	110,273	52.1	11.7
	Democratic	Mitsuaki Takeda^‡ (endorsed by the JIP)	51,362	24.3	1.1
	Communist	Mariko Ikeda	49,902	23.6	10.0
Registered electors			404,949
Turnout			220,576	54.5	3.2
	Liberal Democratic hold		Swing	8.1

2012^[7]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Seiji Kihara^‡ (endorsed by Komeito)	98,070	40.4	4.4
	Democratic	Koichi Kato^‡ (incumbent) (endorsed by the PNP)	61,519	25.4	25.8
	Restoration	Kazusa Noda^‡	50,031	20.6	New
	Communist	Mariko Ikeda	33,092	13.6	1.8
Registered electors			402,763
Turnout			254,264	63.1	5.0
	Liberal Democratic gain from Democratic		Swing	5.5

2009^[8]
Party		Candidate	Votes	%	±%
	Democratic	Koichi Kato^‡ (incumbent - Tokyo PR) (endorsed by the SDP)	136,294	51.2	2.7
	Liberal Democratic	Seiji Kihara^‡ (incumbent)	95,718	36.0	6.6
	Communist	Mariko Ikeda^‡	31,475	11.8	1.0
	Happiness Realization	Kazuyuki Abe	2,560	1.0	New
Registered electors			398,174
Turnout			271,157	68.1	1.1
	Democratic gain from Liberal Democratic		Swing	5.1

2005^[9]
Party		Candidate	Votes	%	±%
	Liberal Democratic	Seiji Kihara^‡	112,634	44.6	7.4
	Democratic	Toru Miyamoto^‡‡ (incumbent)	107,916	42.7	8.0
	Communist	Mariko Ikeda^‡	32,299	12.8	0.7
Registered electors			388,041
Turnout			259,794	67.0	6.9
	Liberal Democratic gain from Democratic		Swing	3.7

2003^[10]
Party		Candidate	Votes	%	±%
	Democratic	Koichi Kato^‡ (incumbent)	111,041	50.7	11.2
	Liberal Democratic	Seiichiro Shimizu^‡	81,588	37.2	New
	Communist	Mariko Ikeda	26,434	12.1	3.1
Registered electors			380,991
Turnout			237,438	60.1	4.8
	Democratic hold		Swing	15.2

2000^[11]
Party		Candidate	Votes	%	±%
	Democratic	Koichi Kato^‡	93,236	39.5	19.2
	Komeito	Yuriko Ono^‡	58,613	24.8	2.0
	Independent	Seiichiro Shimizu	48,613	20.6	New
	Communist	Ikuo Suzuki	35,826	15.2	1.9
Registered electors			371,592
Turnout			241,052	64.9
	Democratic gain from New Frontier		Swing	9.6

1996^[12]
Party		Candidate	Votes	%	±%
	New Frontier	Yuriko Ono	55,559	27.0	*New*
	Liberal Democratic	Seiichiro Shimizu^‡	54,582	26.5	New
	Democratic	Shino Nakano^‡	41,705	20.3	New
	Communist	Nobuhiro Maesawa	35,150	17.1	New
	Independent	Naoko Asaki	13,957	6.8	New
	New Socialist	Etsuko Nagata	4,878	2.4	New
Registered electors			360,803
Turnout			210,925	58.5	N/A
	New Frontier win (new seat)

References[edit]

^ "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]. Ministry of Internal Affairs and Communications (in Japanese). Retrieved 2023-01-13.
^ "法律第百四号（平六・一一・二五）". www.shugiin.go.jp. Japanese House of Representatives. 1994. Retrieved 2023-01-13.
^ "東京都" [Tokyo] (PDF). Ministry of Internal Affairs and Communications (in Japanese). 2022. Retrieved 2023-01-13.
^ "東京20区 - 第49回衆議院議員選挙" [Tokyo 20th District - 49th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第48回衆議院議員選挙" [Tokyo 20th District - 48th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第47回衆議院議員選挙" [Tokyo 20th District - 47th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第46回衆議院議員選挙" [Tokyo 20th District - 46th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第45回衆議院議員選挙" [Tokyo 20th District - 45th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第44回衆議院議員選挙" [Tokyo 20th District - 44th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第43回衆議院議員選挙" [Tokyo 20th District - 43rd House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第42回衆議院議員選挙" [Tokyo 20th District - 42nd House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.
^ "東京20区 - 第41回衆議院議員選挙" [Tokyo 20th District - 41st House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[1] "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]. Ministry of Internal Affairs and Communications (in Japanese). Retrieved 2023-01-13.

[2] "法律第百四号（平六・一一・二五）". www.shugiin.go.jp. Japanese House of Representatives. 1994. Retrieved 2023-01-13.

[3] "東京都" [Tokyo] (PDF). Ministry of Internal Affairs and Communications (in Japanese). 2022. Retrieved 2023-01-13.

[4] "東京20区 - 第49回衆議院議員選挙" [Tokyo 20th District - 49th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[5] "東京20区 - 第48回衆議院議員選挙" [Tokyo 20th District - 48th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[6] "東京20区 - 第47回衆議院議員選挙" [Tokyo 20th District - 47th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[7] "東京20区 - 第46回衆議院議員選挙" [Tokyo 20th District - 46th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[8] "東京20区 - 第45回衆議院議員選挙" [Tokyo 20th District - 45th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[9] "東京20区 - 第44回衆議院議員選挙" [Tokyo 20th District - 44th House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[10] "東京20区 - 第43回衆議院議員選挙" [Tokyo 20th District - 43rd House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[11] "東京20区 - 第42回衆議院議員選挙" [Tokyo 20th District - 42nd House of Representatives General Election]. go2senyko.com (in Japanese). Retrieved 2023-01-13.

[12] "東京20区 - 第41回衆議院議員選挙" [Tokyo 20th District - 41st House of Representatives General Election]. go2senyko.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, 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