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Chiba 5th District
Chiba 5th District
千葉県第4区
Parliamentary constituency; for the Japanese House of Representatives
Prefecture	Chiba
Proportional District	Southern Kanto
Electorate	413,484 (as of September 2022)
Current constituency
Created	1994
Seats	One
Political parties of Japan	Liberal Democratic Party
Representative	Arfiya Eri

Chiba 5th District (千葉県第5区, Chiba-ken dai-go-ku) is an electoral district in the Japanese House of Representatives. The district was established in 1994 after the introduction of single-member constituencies in that year. Since its creation it has been redistricted twice: once in 2002 and again in 2022.

Arfiya Eri, a Liberal Democratic Party politician of Uyghur descent has represented the district since winning a by-election on 17 April 2023.^[2]

Areas covered

Current district

Areas covered 2002–2022

Ichikawa
- Part of the central government office district
  - Ichikawa 1 – Ichikawa 3, Ichikawaminami, Mama 1-3, Shinden, Hirata, Yawata, Minami-yawata, Sugano, Higashi-Kanno, Higashihama 1, Tajiri, Takaya, Takaya Shinmachi, Baraki, Futamta, Futamata Shinmachi, Kamimyouden
Urayasu

Areas covered before 2002

From its establishment in 1994 until its first redistricting in 2002, the areas covered by the district were as follows:

Ichikawa (just the districts of Gyotoku and the Ichikawa Government district)
Urayasu

List of representatives

Election	Representative
1996	Kou Tanaka [ja]	Democratic
2000	Kou Tanaka [ja]	Democratic
2003	Hirotami Murakoshi [ja]	Democratic
2005	Kentaro Sonoura	Liberal Democratic
2009	Hirotami Murakoshi [ja]	Democratic
2012	Kentaro Sonoura	Liberal Democratic
2014
2017
2021
Vacant (December 2022–April 2023)
2023 by-el	Arfiya Eri	Liberal Democratic

Election results

‡ - Also ran in the Minami Kanto PR district election

2024
Party		Candidate	Votes	%	±%
	LDP	Arfiya Eri	59,636	27.63	2.85
	CDP	Kentarō Yazaki	66,031	30.60	3.01
	DPP	Junko Okano	51,033	23.65	8.63
	Ishin	Tomoyasu Kishino	17,615	8.16	5.72
	JCP	Masato Sakurai	11,015	5.10	2.37
	Sanseitō	Jun'ichi Myaji	10,490	4.86	New
Turnout
	CDP hold

2023^[3]
Party		Candidate	Votes	%	±%
	LDP	Arfiya Eri	50,578	30.58	16.39
	CDP	Kentarō Yazaki	45,635.399	27.59	1.72
	DPP	Junko Okano	24,842	15.02	4.83
	Ishin	Tomoyasu Kishino	22,952	13.88	0.36
	JCP	Kazuko Saitō	12,360	7.47	6.78
	Independent	Kentaro Hoshi	6,561.599	3.97	New
	Seijika Joshi	Mitsue Oda	2,463	1.49	New
Registered electors			451,273
Turnout				38.25	15.82
	LDP hold

2021^[4]
Party		Candidate	Votes	%	±%
	LDP	Kentaro Sonoura^‡	111,985.611	46.97	4.05
	CDP	Kentaro Yazaki^‡	69,887.387	29.31	New
	Ishin	Tamotsu Shīki^‡	32,241	13.52	New
	DPP	Atsushi Tokita^‡	24,307	10.19	New
Registered electors			450,365
Turnout				54.07	4.96
	LDP hold

2017^[5]
Party		Candidate	Votes	%	±%
	LDP	Kentaro Sonoura^‡	107,299	51.02	2.78
	CDP	Atsushi Yamada^‡	62,894	29.91	New
	Kibō no Tō	Junko Okano^‡	40,115	19.07	New
Registered electors			438,691
Turnout				49.11	0.09
	LDP hold

2014^[6]
Party		Candidate	Votes	%	±%
	LDP	Kentaro Sonoura^‡	105,941	53.80	18.49
	Democratic	Hirotami Murakoshi^‡	57,500	29.20	7.09
	JCP	Fumiko Asano^‡	28,055	14.25	8.82
	Independent Politician	Kazuo Ishida	5,411	2.75	New
Registered electors			415,510
Turnout				49.20	8.66
	LDP hold

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.
^ Johnston, Eric (2023-04-24). "Kishida rules out snap poll after LDP wins big in Sunday by-elections". The Japan Times. Retrieved 2023-04-24.
^ "千葉5区 - 第49回衆議院議員補欠選挙" [Chiba 5th District - by-election of 49th House of Representatives general election]. go2senkyo.com (in Japanese). Retrieved 2023-06-22.
^ "千葉5区 - 第49回衆議院議員選挙" [Chiba 5th District - 49th House of Representatives general election]. go2senkyo.com (in Japanese).
^ "千葉5区 - 第48回衆議院議員選挙" [Chiba 5th District - 48th House of Representatives general election]. go2senkyo.com (in Japanese).
^ "千葉5区 - 第47回衆議院議員選挙" [Chiba 5th District - 47th House of Representatives general election]. go2senkyo.com (in Japanese).