Iwate 1st district

Japan House of Representatives constituency

Iwate 1st District

Parliamentary constituency
for the Japanese House of Representatives

Numbered map of Iwate Prefecture single-member districts

Prefecture| Iwate
Proportional District| Tohoku
Electorate| 287,956[1] (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

[edit]

Representative  | Party  | 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

[edit]

* 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] Party  | 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] Party  | 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] Party  | 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

[edit]

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.

* v
* t
* e

Iwate's electoral districts for the Diet of Japan

FPTP "small" districts (1996–present)

(4)

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)

2 (8→7 Representatives, 2 Councillors)

Limited voting "large" districts (1946)
At-large (8 Representatives)

SNTV "medium-sized" districts (1928–1942)

2 (7 Representatives)

FPTP/SNTV "small" districts (1920–1924)

7 (7 Representatives)

SNTV "large" districts (1902–1917)
Morioka city
counties (gunbu) (6 Representatives)

FPTP/bloc voting "small" districts (1890–1898)

5 (5 Representatives)

* 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

Tōhoku|

Block
12 seats
Aomori

Iwate

Miyagi

Akita

Yamagata

Fukushima

Kita- (North) Kantō|

Block
19 seats
Ibaraki

Tochigi

Gunma

Saitama

Minami- (South) Kantō|

Block
23 seats
Chiba

Kanagawa

Yamanashi

Tokyo|

Block
19 seats
Tokyo

Hokuriku-Shin'etsu|

Block
10 seats
Niigata

Toyama

Ishikawa

Fukui

Nagano

Tōkai|

Block
21 seats
Gifu

Shizuoka

Aichi

Mie

Kinki|

Block
28 seats
Shiga

Kyoto

Osaka

Hyōgo

Nara

Wakayama

Chūgoku|

Block
10 seats
Tottori

Shimane

Okayama

Hiroshima

Yamaguchi

Shikoku|

Block
6 seats
Tokushima

Kagawa

Ehime

Kōchi

Kyūshū|

Block
20 seats
Fukuoka

Saga

Nagasaki

Kumamoto

Ōita

Miyazaki

Kagoshima

Okinawa

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
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