Iwate 1st district

Iwate 1st District
Iwate 1st District
Parliamentary ; for the Japanese House of Representatives
	Numbered map of Iwate Prefecture single-member districts
Prefecture	Iwate
Proportional District	Tohoku
Electorate	287,956 (Sept. 2024)
Current constituency
Created	1994
Seats	One
Party	CDP
Representative	Takeshi Shina (2007–)
Created from	Iwate's 1st "medium-sized" district
Municipalities	The city of Morioka, town of Shiwa and town of Yahaba

Iwate 1st district (岩手[県第]1区, Iwate[-ken dai-]ikku) is a single-member constituency of the House of Representatives in the Diet of Japan. It is located in central Iwate and consists of the prefectural capital Morioka city and the two remaining towns in Shiwa district.^[2] Before 2017, it covered of the majority of the prefectural capital Morioka (the whole city without the former village of Tamayama) and Shiwa district. In 2012, 278,860 eligible voters were registered in the district.^[3]

Before the electoral reform of 1994, the area had been part of the multi-member Iwate 1st district that elected four Representatives by single non-transferable vote.

Iwate is the home of Ichirō Ozawa and like three of the prefecture's four post-reform districts, the 1st district had been represented by his parties from its creation to 2012: the New Frontier Party, the Liberal Party and the Democratic Party. In 2012, Ozawa and his followers split from the Democratic Party: 1st district representative Shina stayed with the Democrats, Ozawa's Tomorrow Party of Japan nominated Yōko Tasso, the wife of former representative and current Iwate governor Takuya Tasso; but Shina defended the district against Tasso and Liberal Democratic former prefectural assembly member Hinako Takahashi who won a proportional block seat.

List of representatives

Representative		Dates	Notes
Takuya Tasso	NFP	1996–2000
	LP	2000–2003
	DPJ	2003–2007	Resigned. Elected Governor of Iwate Prefecture in 2007
Takeshi Shina	DPJ	2007–2016
	DP	2016–2017
	Kibō no Tō	2017–2018
	DPP	2018–2020
	CDP	2020–

Election results

DC: Dual candidate (jūfuku rikkōho) standing simultaneously for a seat in the Tōhoku proportional representation block
$: Lost deposit and if a dual candidate: is also ineligible as a proportional candidate

2024^[4]
Party		Candidate	Votes	%	±%
	CDP	Takeshi Shina	94,409	61.5	10.3
	LDP	Hiromasa Yonai	43,623	28.4	8.4
	JCP	Kyōko Yoshida	15,367	10.0	1.9
Registered electors			287,457
Turnout				54.37	4.44
	CDP hold

2021^[5]
Party		Candidate	Votes	%	±%
	CDP	Takeshi Shina	87,017	51.2	1.4
	LDP	Hinako Takahashi	62,666	36.9	2.4
	JCP	Kyōko Yoshida	20,300	11.9	1.0
Registered electors			293,290
Turnout				58.81	1.79
	CDP hold

2017^[6]
Party		Candidate	Votes	%	±%
	Kibō no Tō	Takeshi Shina	87,534	52.6
	LDP	Hinako Takahashi (elected in Tohoku PR block)	57,381	34.5	3.1
	JCP	Kyōko Yoshida	21,549	12.9	2.5
Registered electors			296,551
Turnout				57.02	3.52

2014^[7]
	Candidate	Votes	%	±%
Democratic	Takeshi Shina (DC)	76,787	52.0	+17.3
LDP	Hinako Takahashi (DC, won PR seat)	46,409	31.4	+4.1
JCP	Kyōko Yoshida	15,374	10.4	new
Social Democratic	Mitsumasa Hosokawa (DC, $)	9,052	6.1	new

2012^[8]
	Candidate	Votes	%
Democratic	Takeshi Shina (endorsed by PNP, DC)	55,909	34.7
LDP	Hinako Takahashi (DC, elected by PR)	44,002	27.3
Tomorrow	Yōko Tasso (endorsed by NPD, DC)	41,706	25.9
Social Democratic	Masahiro Isawa (DC, $)	9,922	6.2
JCP	Shino Yahata ($)	9,473	5.9

2009^[9]
Party		Candidate	Votes	%
	Democratic	Takeshi Shina (endorsed by PNP)	116,425	60.2
	LDP	Hinako Takahashi (endorsed by Komeito)	50,585	26.2
	Social Democratic	Masahiro Isawa	13,048	6.8
	JCP	Kyōko Yoshida	12,187	6.3
	Happiness Realization	Kensaku Mori	1,047	0.5
Turnout			195,474	70.93

By-election, July 29, 2007^[10]
Party		Candidate	Votes	%
	Democratic	Takeshi Shina (endorsed by PNP)	102,987	61.7
	LDP	Masanori Tamazawa (endorsed by Komeito)	53,125	31.8
	JCP	Sadakiyo Segawa	10,821	6.5
Turnout			169,092	61.05

2005^[11]
Party		Candidate	Votes	%
	Democratic	Takuya Tasso	95,109	51.7
	LDP	Atsushi Oikawa	65,187	35.4
	Social Democratic	Mitsumasa Hosokawa	14,050	7.6
	JCP	Shin'ya Kanbe	9,659	5.2
Turnout			185,845	67.93

2003^[12]
Party		Candidate	Votes	%
	Democratic	Takuya Tasso	91,025	53.6
	LDP	Atsushi Oikawa	57,899	34.1
	Social Democratic	Yuriko Gotō	12,014	7.1
	JCP	Yōichi Naganuma	8,806	5.2
Turnout			171,880	63.34

2000^[13]
	Candidate	Votes	%
Liberal	Takuya Tasso	97,835	43.0
LDP	Tokuichirō Tamazawa	65,597	37.7
Social Democratic	Yuriko Gotō	17,309	9.9
JCP	Ryūgorō Satō	9,261	5.3
Democratic	Kikuji Fujikura	6,964	4.0

1996^[14]
Party		Candidate	Votes	%
	New Frontier	Takuya Tasso	67,420	40.6
	LDP	Tokuichirō Tamazawa (elected by PR)	49,665	29.9
	Independent	Riki Nakamura	17,087	10.3
	Social Democratic	Kuniki Yamanaka	16,758	10.1
	JCP	Toshiko Sakuma	10,668	6.4
	Democratic	Yuriko Gotō	4,551	2.7
Turnout			168,434	65.63

References

^ Ministry of Internal Affairs and Communications (MIC): [1](in Japanese)
^ MIC: 2017 changes to House of Representatives electoral districts, Map and table of changes in Iwate (in Japanese)
^ Ministry of Internal Affairs and Communications (MIC): 平成24年9月2日現在選挙人名簿及び在外選挙人名簿登録者数 (in Japanese)
^ 小選挙区岩手1区 (in Japanese). NHK. Retrieved January 8, 2025.
^ 小選挙区岩手[1区 (in Japanese). NHK. Retrieved January 8, 2025.
^ 小選挙区岩手[1区 (in Japanese). NHK. Retrieved January 8, 2025.
^ 総選挙2014>開票結果小選挙区岩手. Yomiuri Shimbun (in Japanese). Retrieved October 8, 2017.
^ 総選挙2012>開票結果小選挙区岩手. Yomiuri Shimbun (in Japanese). Retrieved October 8, 2017.
^ 衆議院>第45回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.
^ 衆議院>第44回衆議院議員補欠選挙. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved May 7, 2011.
^ 衆議院>第44回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.
^ 衆議院>第43回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.
^ 衆議院>第42回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.
^ 衆議院>第41回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.

[1] Ministry of Internal Affairs and Communications (MIC): [1](in Japanese)

[2] MIC: 2017 changes to House of Representatives electoral districts, Map and table of changes in Iwate (in Japanese)

[3] Ministry of Internal Affairs and Communications (MIC): 平成24年9月2日現在選挙人名簿及び在外選挙人名簿登録者数 (in Japanese)

[4] 小選挙区岩手1区 (in Japanese). NHK. Retrieved January 8, 2025.

[5] 小選挙区岩手[1区 (in Japanese). NHK. Retrieved January 8, 2025.

[6] 小選挙区岩手[1区 (in Japanese). NHK. Retrieved January 8, 2025.

[7] 総選挙2014>開票結果小選挙区岩手. Yomiuri Shimbun (in Japanese). Retrieved October 8, 2017.

[8] 総選挙2012>開票結果小選挙区岩手. Yomiuri Shimbun (in Japanese). Retrieved October 8, 2017.

[9] 衆議院>第45回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.

[10] 衆議院>第44回衆議院議員補欠選挙. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved May 7, 2011.

[11] 衆議院>第44回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.

[12] 衆議院>第43回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.

[13] 衆議院>第42回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.

[14] 衆議院>第41回衆議院議員選挙>岩手県>岩手1区. ザ･選挙 (in Japanese). K.K. VoiceJapan. Retrieved January 8, 2025.

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Iwate's electoral districts for the Diet of Japan
FPTP "small" districts (1996–present) 2 3 (4) PR part of the Tōhoku PR block (16→14→13→12 seats) House of Councillors At-large (4→3 Representatives, 2 Councillors)
SNTV "medium-sized" districts (1947–1993) 1 2 (8→7 Representatives, 2 Councillors)
Limited voting "large" districts (1946) At-large (8 Representatives)
SNTV "medium-sized" districts (1928–1942) 1 2 (7 Representatives)
FPTP/SNTV "small" districts (1920–1924) 1 2 3 4 5 6 7 (7 Representatives)
SNTV "large" districts (1902–1917) Morioka city counties (gunbu) (6 Representatives)
FPTP/bloc voting "small" districts (1890–1898) 1 2 3 4 5 (5 Representatives)

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 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