Nagano 3rd district

Nagano 3rd district
Nagano 3rd district
Parliamentary constituency; for the Japanese House of Representatives
	Numbered map of inner Nagano single-member districts
Prefecture	Nagano
Proportional District	Hokurikushin'etsu
Electorate	400,529 (2020)
Current constituency
Created	1994
Seats	One
Party	CDP
Representative	Takeshi Kōzu
Created from	Nagano 2nd district (1947–1993)
Municipalities	Ueda, Komoro, Chikuma, Saku, Tōmi, Minamisaku, Kitasaku, Chiisagata and Hanishina

Nagano 3rd district (長野県第3区, Nagano-ken dai-sanku or 長野3区, Nagano sanku) is a single-member constituency of the House of Representatives, the lower house of the national Diet of Japan. It is located in central and eastern part of Nagano Prefecture and consists of Ueda City, Komoro City, Chikuma City, Saku City, Tōmi City, Minamisaku District, Kitasaku District, Chiisagata District and Hanishina District. As of December 2020, 400,529 eligible voters were registered in the district.^[1]

Yosei Ide, a Liberal Democrat, has represented this district since December 2014.

List of members representing the district

Member		Dates	Electoral history	Notes
Tsutomu Hata	New Frontier	October 21, 1996 – December 26, 1996	Redistricted from the former 2nd district and Re-elected in 1996. Re-elected in 2000. Re-elected in 2003. Re-elected in 2005. Re-elected in 2009. Retired.	Prime Minister of Japan (1994)
	Sun	December 26, 1996 – January 23, 1998
	Good Governance	January 23, 1998 – April 27, 1998
	Democratic	April 27, 1998 – November 16, 2012
Yoshiyuki Terashima	Democratic	December 17, 2012 – November 21, 2014	Elected in 2012. Lost re-election.	Lost re-election in the Hokurikushin'etsu PR block.
Yosei Ide	Innovation	December 15, 2014 – March 27, 2016	Re-elected in 2014. Re-elected in 2017.	Elected in 2012 in the Hokurikushin'etsu PR block. Elected in 2024 in the Hokurikushin'etsu PR block.
	Democratic	March 27, 2016 – October 3, 2017
	Kibō no Tō	October 3, 2017 – May 7, 2018
	Independent	May 7, 2018 – December 21, 2019
	LDP	December 21, 2019 – October 9 2024
Takeshi Kōzu	CDP	Octoberber 29, 2024 – present

Election results

2024 • 2021 •2017 • 2014 • 2012 • 2009 • 2005 • 2003 • 2000 • 1996

2024

2024^[2]
Party		Candidate	Votes	%	±%
	CDP	Takeshi Kōzu (PR incumbent)	121,594	55.01	8.14
	LDP	Yōsei Ide (incumbent) (elected by PR)	99,431	44.99	6.54
Registered electors
Turnout			221,025	57.90	1.42
	CDP gain from LDP

2021

2021 Japanese general election^[3]
Party		Candidate	Votes	%
	LDP	Yōsei Ide	120,023	51.5
	CDP	Takeshi Kōzu (elected by PR)	109,179	46.9
	Anti-NHK	Takao Ike	3,722	1.6
Registered electors			399,168
Turnout				59.32
	LDP hold

2017

2017 Japanese general election^[4]
Party		Candidate	Votes	%
	Kibō no Tō	Yosei Ide	127,542	53.1
	LDP	Hitoshi Kiuchi	74,722	31.1
	JCP	Yuka Koganezawa	34,462	14.3
	Happiness Realization	Yukihisa Oikawa	3,687	1.5
Total votes			240,413	100.0
	Kibō no Tō hold

2014

2014 Japanese general election^[5]
Party		Candidate	Votes	%
	Innovation	Yosei Ide	77,289	34.4
	Democratic	Yoshiyuki Terashima	63,397	28.2
	LDP	Hitoshi Kiuchi (re-elected by PR)	56,365	25.1
	JCP	Chiaki Karasawa	27,947	12.4
Total votes			224,998	100.0
	Ishin gain from Democratic

2012

2012 Japanese general election^[6]
Party		Candidate	Votes	%
	Democratic	Yoshiyuki Terashima	69,843	27.7
	Your	Yosei Ide (elected by PR)	67,750	26.9
	LDP	Hitoshi Kiuchi (elected by PR)	62,539	24.8
	Restoration	Taisuke Ide	29,905	11.8
	JCP	Syōsuke Iwaya	21,433	8.5
Total votes			251,470	100.0

2009

2009 Japanese general election^[7]
Party		Candidate	Votes	%
	Democratic	Tsutomu Hata	138,614	47.5
	LDP	Tadao Iwasaki	106,574	36.5
	JCP	Syōsuke Iwaya	40,948	14.0
	Happiness Realization	Manabu Ebara	5,576	1.9
Total votes			291,712	100.0

2005

2005 Japanese general election^[8]
Party		Candidate	Votes	%
	Democratic	Tsutomu Hata	143,728	51.1
	LDP	Tadao Iwasaki	102,889	36.6
	JCP	Syōsuke Iwaya	34,669	12.3
Total votes			281,286	100.0

2003

2003 Japanese general election^[9]
Party		Candidate	Votes	%
	Democratic	Tsutomu Hata	150,203	58.5
	LDP	Tadao Iwasaki (re-elected by PR)	78,364	30.5
	JCP	Syōsuke Iwaya	28,083	10.9
Total votes			256,650	100.0

2000

2000 Japanese general election^[10]
Party		Candidate	Votes	%
	Democratic	Tsutomu Hata	163,382	61.2
	LDP	Tadao Iwasaki (elected by PR)	67,002	25.1
	JCP	Ken'ichi Nakazawa	34,110	12.8
	Independent	Tokio Hosoya	2,276	0.9
Total votes			266,770	100.0

1996

1996 Japanese general election^[11]
Party		Candidate	Votes	%
	New Frontier	Tsutomu Hata	161,670	62.6
	NP-Sakigake	Syōichi Ide	70,960	27.5
	JCP	Mizue Matsuzawa	25,600	9.9
Total votes			258,230	100.0
	New Frontier win (new seat)

References

^ ^a ^b "市町村別選挙人名簿登録者数（衆議院選挙区別）" [Number of registered voters] (PDF) (in Japanese). Nagano Prefecture Election Commission. 2020.
^ 日本放送協会. "衆議院選挙2024 埼玉(川越・越谷など)開票速報・選挙結果 NHK". www.nhk.or.jp (in Japanese). Retrieved 2025-03-31.
^ 開票速報小選挙区：長野- 2021衆議 (in Japanese). NHK. Retrieved 6 January 2022.
^ "長野3区". NHK (in Japanese). Retrieved 2020-12-30.
^ 長野3区. NHK (in Japanese). Retrieved 2020-12-30.
^ 長野3区. The Asahi Shimbun (in Japanese). Retrieved 2020-12-30.
^ 長野3区. The Asahi Shimbun (in Japanese). Retrieved 2020-12-30.
^ 長野3区. The Asahi Shimbun (in Japanese). Retrieved 2020-12-30.
^ 長野3区
^ 長野3区 (in Japanese). 選挙ドットコム. Retrieved 2020-12-30.
^ 長野3区 (in Japanese). 選挙ドットコム. Retrieved 2020-12-30.

[abc-1] "市町村別選挙人名簿登録者数（衆議院選挙区別）" [Number of registered voters] (PDF) (in Japanese). Nagano Prefecture Election Commission. 2020.

[2] 日本放送協会. "衆議院選挙2024 埼玉(川越・越谷など)開票速報・選挙結果 NHK". www.nhk.or.jp (in Japanese). Retrieved 2025-03-31.

[3] 開票速報小選挙区：長野- 2021衆議 (in Japanese). NHK. Retrieved 6 January 2022.

[4] "長野3区". NHK (in Japanese). Retrieved 2020-12-30.

[5] 長野3区. NHK (in Japanese). Retrieved 2020-12-30.

[6] 長野3区. The Asahi Shimbun (in Japanese). Retrieved 2020-12-30.

[7] 長野3区. The Asahi Shimbun (in Japanese). Retrieved 2020-12-30.

[8] 長野3区. The Asahi Shimbun (in Japanese). Retrieved 2020-12-30.

[9] 長野3区

[10] 長野3区 (in Japanese). 選挙ドットコム. Retrieved 2020-12-30.

[11] 長野3区 (in Japanese). 選挙ドットコム. Retrieved 2020-12-30.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

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	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

Nagano 3rd district
Parliamentary constituency for the Japanese House of Representatives
Numbered map of inner Nagano single-member districts
Prefecture	Nagano
Proportional District	Hokurikushin'etsu
Electorate	400,529 (2020)^[1]
Current constituency
Created	1994
Seats	One
Party	CDP
Representative	Takeshi Kōzu
Created from	Nagano 2nd district (1947–1993)
Municipalities	Ueda, Komoro, Chikuma, Saku, Tōmi, Minamisaku, Kitasaku, Chiisagata and Hanishina