Tokyo 22nd district

Tokyo 22nd District (東京都第22区, Tokyo-to dai-junini-ku, or 東京22区, Tokyo nijuni-ku) is an electoral district of the Japanese House of Representatives located in Western Tokyo. The district was created in 1994 as part of the move to single-member constituencies.

Tokyo 22nd District
東京都第22区
Parliamentary constituency for the Japanese House of Representatives
Prefecture	Tokyo
Proportional Block	Tokyo
Electorate	430,260 (as of 1 September 2022)[1]
Current constituency
Created	1994
Seats	One
Party	CDP
Representative	Ikuo Yamahana

Areas covered

Current district

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

• Mitaka
• Chōfu
• Komae

As part of the 2022 reapportionments, the remaining sections of Inagi were given to the new 30th district.

Areas 2017–2022

From the second redistricting in 2017 until the third redistricting in 2022, the areas covered by this district were as follows:^[3][4]

• Mitaka
• Chōfu
• Komae
• Parts of Inagi
  • Yanoguchi, Higashi Naganuma, Daimura, Hyakumura, Oshidate, Koyodai 1-6

As part of the 2017 redistricting, parts of Inagi city were transferred to the 21st district.

Areas 2002–2017

From the first redistricting in 2002 until the second redistricting in 2017, the areas covered by this district were as follows:^[5]

• Mitaka
• Chōfu
• Komae
• Inagi

As part of the 2002 redistricting, Fuchū was moved to the 18th district and Mitaka was gained from that same district.

Areas from before 2002

From the founding of this district in 1994 until the first redistricting in 2002, the areas covered by this district were as follows:^[6]

• Fuchu
• Chōfu
• Komae
• Inagi

History

Elected representatives

Representative	Party		Years served	Notes
Tatsuya Ito		NFP	1996 – 2000	Joined the LDP and won a seat in the Tokyo PR district
Ikuo Yamahana		DPJ	2000 – 2005	Lost re-election in the 2005 general election
Tatsuya Ito		LDP	2005 – 2009	Lost re-election in the 2009 general election
Ikuo Yamahana		DPJ	2009 – 2012	Lost re-election in the 2012 general election. Won election to the Tokyo PR district in the 2017 general election.
Tatsuya Ito		LDP	2012 – 2024
Ikuo Yamahana		CDP	2024 –

Election results

‡ - Also ran for the Tokyo PR district

‡‡ - Also ran for and was elected to the Tokyo PR district

2024^[7]

Party		Candidate	Votes	%	±%
	CDP	Ikuo Yamahana‡	99,790	40.2	0.1
	LDP	Tatsuya Ito‡‡ (won seat in PR)	96,748	39.0	7.6
	Sanseitō	Mika Suzuki	26,005	10.5
	JCP	Yoshitaka Hirano	25,453	10.2
Registered electors			428,356
Turnout				59.61	0.40
	CDP gain from LDP

2021^[8]

Party		Candidate	Votes	%	±%
	LDP	Tatsuya Ito‡ (incumbent) (endorsed by Komeito)	131,351	46.9	3.5
	CDP	Ikuo Yamahana‡ (incumbent - Tokyo PR)	112,393	40.1	4.3
	Reiwa	Mari Kushibuchi‡	31,981	11.4	New
	Anti-NHK	Youhei Hasegawa	4,535	1.6	New
Registered electors			478,721
Turnout			287,281	60.0	4.3
	LDP hold		Swing	3.1

2017^[9]

Party		Candidate	Votes	%	±%
	LDP	Tatsuya Ito‡ (incumbent) (endorsed by Komeito)	110,493	43.4	2.6
	CDP	Ikuo Yamahana‡‡	91,073	35.8	New
	Kibō no Tō	Emi Kanegasaki‡	30,236	11.9	New
	JCP	Makoto Abe	22,859	9.0	5.6
Registered electors			465,616
Turnout			259,488	55.7	0.4
	LDP hold		Swing	4.3

2014^[10]

Party		Candidate	Votes	%	±%
	LDP	Tatsuya Ito‡ (incumbent) (endorsed by Komeito)	116,757	46.0	6.0
	Democratic	Ikuo Yamahana‡	80,014	31.5	8.5
	JCP	Jun Sakauchi	36,980	14.6	5.7
	Japanese Kokoro	Akira Shikano‡	20,288	8.0	New
Registered electors			466,679
Turnout			261,857	56.1	8.3
	LDP hold		Swing	3.4

2012^[11]

Party		Candidate	Votes	%	±%
	LDP	Tatsuya Ito‡ (endorsed by Komeito)	115,290	40.0	1.7
	Democratic	Ikuo Yamahana‡ (incumbent) (endorsed by the PNP)	66,210	23.0	27.6
	Restoration	Akira Shikano‡	40,698	14.1	New
	Your	Ken Tsuyama‡	37,805	13.1	New
	JCP	Jun Sakauchi	25,740	8.9	0.4
	Happiness Realization	Yoshihiro Ihara	2,180	0.8	New
Registered electors			462,725
Turnout			298,180	64.4	3.5
	LDP gain from Democratic		Swing	7.8

2009^[12]

Party		Candidate	Votes	%	±%
	Democratic	Ikuo Yamahana‡	154,904	50.6	13.4
	LDP	Tatsuya Ito‡ (incumbent) (endorsed by Komeito)	117,315	38.3	13.8
	JCP	Masafumi Yoshioka	28,556	9.3	0.5
	Happiness Realization	Ken Tsuyama‡	5,501	1.8	New
Registered electors			459,207
Turnout			311,893	67.9	1.6
	Democratic gain from LDP		Swing	11.1

2005^[13]

Party		Candidate	Votes	%	±%
	LDP	Tatsuya Ito‡ (incumbent - Tokyo PR)	150,404	52.1	8.6
	Democratic	Ikuo Yamahana‡ (incumbent)	107,417	37.2	8.7
	JCP	Yoshiharu Wakabayashi‡	28,356	9.8	0.2
	Independent	Manyo Yamashita	2,483	0.9	New
Registered electors			442,182
Turnout			293,299	66.3	7.4
	LDP gain from Democratic		Swing	11.1

2003^[14]

Party		Candidate	Votes	%	±%
	Democratic	Ikuo Yamahana‡(incumbent)	113,931	45.9	6.0
	LDP	Tatsuya Ito‡‡	105,385	42.5	13.5
	JCP	Yoshiharu Wakabayashi‡	24,859	10.0	4.3
	Independent	Moritaka Sato	4,001	1.6	New
Registered electors			432,492
Turnout			254,695	58.9	2.0
	LDP hold		Swing	8.9

2000^[15]

Party		Candidate	Votes	%	±%
	Democratic	Ikuo Yamahana‡	104,132	38.9	11.8
	LDP	Yuji Shindo‡	77,761	29.0	7.9
	Liberal	Morio Suzuki‡	39,503	14.7	New
	JCP	Takao Okada	38,318	14.3	0.9
	Independent	Matsumi Sakai	5,635	2.1	New
	Liberal League	Koji Tomono	2,687	1.0	New
Registered electors			456,184
Turnout			277,634	60.9	5.6
	Democratic gain from LDP		Swing	N/A

1996^[16]

Party		Candidate	Votes	%	±%
	New Frontier	Tatsuya Ito (incumbent - former Tokyo 11th district)	69,707	29.6	New
	Democratic	Sadao Yamahana‡‡ (incumbent - former Tokyo 11th district)	63,974	27.1	New
	LDP	Yuji Shindo‡	49,837	21.1	New
	JCP	Yoshiko Matsuda	35,762	15.2	New
	Social Democratic	Nobuto Hosaka‡‡	13,904	5.9	New
	New Socialist	Kazumoto Sato	2,526	1.1	New
Registered electors			436,597
Turnout			241,613	55.3	N/A
	LDP gain from Democratic		Swing	N/A

References

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. "東 京 都" [Tokyo] (PDF). Ministry of Internal Affairs and Communications (in Japanese). 2022. Retrieved 2023-01-13.
3. "衆議院議員選挙区画定審議会設置法及び公職選挙法の一部を改正する法律の一部を改正する法律". www.shugiin.go.jp. Retrieved 2023-01-13.
4. "東 京 都" [Tokyo] (PDF). Ministry of Internal Affairs and Communications (in Japanese). 2017. Retrieved 2023-01-13.
5. "公職選挙法の一部を改正する法律". www.shugiin.go.jp. Retrieved 2023-01-13.
6. "法律第百四号（平六・一一・二五）". www.shugiin.go.jp. Retrieved 2023-01-13.
7. "2024年衆議院総選挙 東京14区". NHK (in Japanese). Retrieved 2024-11-09.
8. "東京22区 - 第49回衆議院議員選挙" [Tokyo 22nd District - 49th House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
9. "東京22区 - 第48回衆議院議員選挙" [Tokyo 22nd District - 48th House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
10. "東京22区 - 第47回衆議院議員選挙" [Tokyo 22nd District - 47th House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
11. "東京22区 - 第46回衆議院議員選挙" [Tokyo 22nd District - 46th House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
12. "東京22区 - 第45回衆議院議員選挙" [Tokyo 22nd District - 45th House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
13. "東京22区 - 第44回衆議院議員選挙" [Tokyo 22nd District - 44th House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
14. "東京22区 - 第43回衆議院議員選挙" [Tokyo 22nd District - 43rd House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
15. "東京22区 - 第42回衆議院議員選挙" [Tokyo 22nd District - 42nd House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.
16. "東京22区 - 第41回衆議院議員選挙" [Tokyo 22nd District - 41st House of Representatives election]. go2senkyo.com (in Japanese). Retrieved 2023-01-13.