Chiba 9th district

Chiba 9th district
Chiba 9th district
Parliamentary constituency; for the Japanese House of Representatives
	Numbered map of the Chiba Prefecture single seats
Prefecture	Chiba
Proportional District	Southern Kanto
Electorate	402,640
Current constituency
Created	1994
Seats	One
Party	LDP
Representatives	Hisato Tamiya
Municipalities	Wakaba-ku of Chiba city, Sakura, Yachimata, and Yotsukaidō.

PrefectureChiba

Proportional DistrictSouthern Kanto

Electorate402,640^[1]

Created1994

Chiba 9th district (千葉県第9区, Chiba-ken dai-kyuku or simply 千葉9区, Chiba-kyuku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Chiba Prefecture.

[1]

Election	Representative
1996^[5]	Yukio Jitsukawa	New Frontier
1996^[5]	Yukio Jitsukawa	LDP
2000^[6]	Kenichi Mizuno	LDP
2003^[7]
2005^[8]
2009^[9]	Soichiro Okuno [ja]	Democratic
2012^[10]	Masatoshi Akimoto	LDP
2014^[11]
2017^[12]
2021^[13]	Soichiro Okuno [ja]	CDP
2024^[14]	Soichiro Okuno [ja]	CDP
2026	Hisato Tamiya	LDP

Party		Candidate	Votes	%	±%
	LDP	Hisato Tamiya	89,146	44.2	10.7
	Centrist Reform	Soichiro Okuno [ja] (Incumbent)	69,444	34.4	9.5
	Ishin	Takashi Tanuma [ja]	22,000	10.9	5.9
	Sanseitō	Yūsuke Maeda	21,058	10.4
Registered electors			398,113
Turnout				51.77	0.53
	LDP gain from Centrist Reform

Party		Candidate	Votes	%	±%
	CDP	Soichiro Okuno [ja] (Incumbent)	86,335	43.89	7.20
	LDP	Hisato Tamiya	65,963	33.53	15.38
	Ishin	Takashi Tanuma [ja]	33,034	16.79	New
	JCP	Haruyuki Yamazaki	11,385	5.79	N/A
Majority			20,372	10.36
Registered electors			401,047
Turnout				50.64	2.37
	CDP hold

Party		Candidate	Votes	%	±%
	CDP	Soichiro Okuno [ja]	107,322	51.09	*New*
	LDP	Masatoshi Akimoto (Incumbent) (Won PR seat)	102,741	48.91	2.12
Majority			4,581	2.18
Registered electors			407,331
Turnout				53.01	3.53
	CDP gain from LDP

Party		Candidate	Votes	%	±%
	LDP	Masatoshi Akimoto (Incumbent)	92,180	46.79	3.85
	Kibō no Tō	Soichiro Okuno [ja] (Won PR seat)	76,332	38.75	New
	JCP	Yasushiro Kamoshida	28,488	14.46	4.13
Majority			15,848	8.04
Registered electors			410,963
Turnout				49.48	1.49
	LDP hold

Chiba 9th district

Since 2002

1994 - 2002

List of representatives

Election results

2026

2024

2021

2017

2014

2012

2009

2005

2003

2000

1996

References

Related Articles

Chiba 9th district
Parliamentary constituency for the Japanese House of Representatives
Numbered map of the Chiba Prefecture single seats
Prefecture	Chiba
Proportional District	Southern Kanto
Electorate	402,640^[1]
Current constituency
Created	1994
Seats	One
Party	LDP
Representatives	Hisato Tamiya
Municipalities	Wakaba-ku of Chiba city, Sakura, Yachimata, and Yotsukaidō.

Party		Candidate	Votes	%	±%
	LDP	Masatoshi Akimoto (Incumbent)	85,092	42.94	7.44
	Democratic	Soichiro Okuno [ja] (Won PR seat)	68,564	34.60	6.46
	Future Generations	Yuzuru Nishida [ja]	24,039	12.13	New
	JCP	Yasushiro Kamoshida	20,475	10.33	4.74
Majority			16,528	8.34
Registered electors			402,951
Turnout				50.97	6.90
	LDP hold

Party		Candidate	Votes	%	±%
	LDP	Masatoshi Akimoto	80,024	35.50	5.03
	Democratic	Soichiro Okuno [ja] (Incumbent) (Won PR seat)	63,422	28.14	26.41
	Restoration	Yuzuru Nishida [ja] (Won PR seat)	45,781	20.31	New
	Tomorrow	Mitsue Kawakami [ja]	16,616	7.37	New
	JCP	Toshiyuki Kizaki	12,601	5.59	N/A
	Independent	Hiroshi Sudo [ja]	6,955	3.09	New
Majority			16,602	7.36
Registered electors			402,578
Turnout				57.87	6.46
	LDP gain from Democratic

Party		Candidate	Votes	%	±%
	Democratic	Soichiro Okuno [ja]	136,932	54.55	22.41
	LDP	Kenichi Mizuno (Incumbent)	101,734	40.53	16.40
	Independent	Tatsuo Hatano	7,651	3.05	New
	Happiness Realization	Junko Ito	4,707	1.87	New
Majority			35,198	14.02
Registered electors			399,436
Turnout				64.33	0.11
	Democratic gain from LDP

Party		Candidate	Votes	%	±%
	LDP	Kenichi Mizuno (Incumbent)	140,838	56.93	7.59
	Democratic	Hiroshi Sudo [ja]	79,514	32.14	10.44
	JCP	Tadahira Ogura	16,307	6.59	1.49
	People's New	Hideo Nakahara	10,746	4.34	New
Majority			61,324	24.79
Registered electors			392,712
Turnout				64.22	8.84
	LDP hold

Party		Candidate	Votes	%	±%
	LDP	Kenichi Mizuno (Incumbent)	103,199	49.34	6.40
	Democratic	Hiroshi Sudo [ja] (Won PR seat)	89,057	42.58	0.64
	JCP	Yoshikatsu Ueda	16,892	8.08	5.08
Majority			14,142	6.76
Registered electors			390,110
Turnout				55.38	3.61
	LDP hold

Party		Candidate	Votes	%	±%
	LDP	Kenichi Mizuno	103,381	42.94	8.44
	Democratic	Hiroshi Sudo [ja]	71,184	29.57	New
	JCP	Kazuo Seki	31,671	13.16	0.03
	Liberal	Shin Ubukata	29,777	12.37	New
	Liberal League	Kiyoshi Furuhashi	4,733	1.96	New
Majority			32,197	13.37
Registered electors			428,734
Turnout				58.99
	LDP hold

Party		Candidate	Votes	%	±%
	New Frontier	Yukio Jitsukawa	79,539	36.26	*New*
	LDP	Kenichi Mizuno	75,667	34.50	New
	Democratic	Yasutami Ota	35,211	16.05	New
	JCP	Kazuo Seki	28,937	13.19	New
Majority			3,872	1.76
Registered electors
Turnout
	New Frontier win (new seat)

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: Eisuke Mori, Chiba 11th Vice Speaker of the House of Representatives of Japan: Keiichi Ishii, Northern Kanto PR
Hokkaidō	Block 8 seats Hokkaidō 1 2 3 4 5 6 7 8 9 10 11 12
Tōhoku	Block 12 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	Block 19 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	Block 23 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	Block 19 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	Block 10 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	Block 21 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	Block 28 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	Block 10 seats Tottori 1 2 Shimane 1 2 Okayama 1 2 3 4 Hiroshima 1 2 3 4 5 6 Yamaguchi 1 2 3
Shikoku	Block 6 seats Tokushima 1 2 Kagawa 1 2 3 Ehime 1 2 3 Kōchi 1 2
Kyūshū	Block 20 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
Former districts	Abolished in 2002 Hokkaido 13 Yamagata 4 Shizuoka 9 Shimane 3 Oita 4 Abolished in 2013 Fukui 3 Yamanashi 3 Tokushima 3 Kochi 3 Saga 3 Abolished in 2017 Aomori 4 Iwate 4 Mie 5 Nara 4 Kumamoto 5 Kagoshima 5 Abolished in 2022 Miyagi 6 Fukushima 5 Niigata 6 Shiga 4 Wakayama 3 Okayama 5 Hiroshima 7 Yamaguchi 4 Ehime 4 Nagasaki 4