Yamanashi 1st district

Map of Yamanashi Prefecture single-member districts

Yamanashi 1st district (山梨[県第]1区, Yamanashi[-ken dai-]ikku) is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan located in western Yamanashi Prefecture. As of September 2022 it had 424,557 eligible voters.

History

Before the introduction of single-member districts in the 1990s, all of Yamanashi had formed one at-large district that elected five members to the House of Representatives. After the last House of Representatives election under the old system in 1993, Representatives from Yamanashi included Liberal Democrat Eiichi Nakao, Socialist Azuma Koshiishi and reformist Sakihito Ozawa.

Representatives over time

Nakao and Koshiishi contested the new 1st district in 1996: Nakao won. Koshiishi was elected to the Diet in the 1998 election to represent Yamanashi in the House of Councillors.

In the 2000 Representatives election, Ozawa challenged Nakao and unseated him. He held onto the seat until 2012 when he joined the Japan Restoration Party and lost the district to Liberal Democratic newcomer Noriko Miyagawa, a former junior high school teacher.

Katsuhito Nakajima won the seat for the Democratic Party of Japan, and then continued to represent the electorate for the Democratic Party after the DPJ merged with other parties to form this new party. He was then re-elected as an independent in the 2017 election.

The LDP’s Shinichi Nakatani was elected in 2021, but was then defeated in the 2024 election by Nakajima, who won the seat back running as a member of the Constitutional Democratic Party.

Area

Cities

Towns

Yamanashi lost one electoral constituency in reapportionment in 2013. Previously, the 1st district covered Kōfu, Enzan, Yamanashi City and Higashiyamanashi District. In September 2012, 218,115 voters were registered in the district, giving its voters one of the highest vote weights in the country.[1]

List of representatives

Representative Party Dates Notes
Eiichi Nakao LDP 1996 – 2000
Sakihito Ozawa DPJ 2000 – 2012 Joined Japan Restoration Party in 2012
Re-elected in the S. Kantō PR block
Noriko Miyagawa LDP 2012 – 2014 Re-elected in the S. Kantō PR block
Katsuhito Nakajima DPJ 2014 – 2016
DP 2016 – 2017
Independent 2017 – 2021 Re-elected in the S. Kantō PR block
Shin'ichi Nakatani LDP 2021 – 2024 Re-elected in the S. Kantō PR block
Katsuhito Nakajima CDP 2024 – 2026
Shin'ichi Nakatani LDP 2026 –

Election results

2026[2]
Party Candidate Votes % ±%
LDP Shinichi Nakatani 128,168 52.35 Increase9.87
Centrist Reform Katsuhito Nakajima 87,812 35.86 Decrease10.01
Sanseitō Daisuke Suzuki 18,908 7.72 Increase1.47
JCP Seina Tanaka 9,959 4.07 Decrease 1.33
Registered electors 416,468
Turnout 244,847 59.57 Increase2.88
LDP gain from Centrist Reform
2024[3]
Party Candidate Votes % ±%
CDP Katsuhito Nakajima 107,050 45.87 Decrease1.73
LDP Shin'ichi Nakatani (elected by PR) 99,129 42.48 Decrease5.12
Sanseitō Akihiro Takada 14,597 6,25
JCP Norifumi Sōda 12,601 5.40
Registered electors 419,090
Turnout 233,377 56.69 Decrease2.80
CDP gain from LDP
2021[4]
Party Candidate Votes % ±%
LDP Shin'ichi Nakatani 125,325 50.5 Increase6.6
CDP Katsuhito Nakajima (elected by PR) 118,223 47.6 Increase3.3
Anti-NHK Nobuyuki Henmi 4,826 1.9
Turnout 59.49 Increase1.99
LDP gain from CDP
2017[5]
Party Candidate Votes % ±%
Independent Katsuhito Nakajima 107,007 44.3 Increase0.3
LDP Shin'ichi Nakatani (elected by PR) 105,876 43.9 Increase0.4
JCP Gen Miyauchi 21,320 8.8 Decrease3.7
Happiness Realization Ai Nishiwaki 7,119 3.0
Turnout 57.50 Increase1.24
Independent hold
2014[6]
Party Candidate Votes % ±%
Democratic Katsuhito Nakajima 102,111 44.0 Increase23.7
LDP Noriko Miyagawa (elected by PR) 101,026 43.5 Decrease0.1
JCP Akiko Endō 29,125 12.5 Increase4.0
Turnout 56.26 Decrease4.00
Democratic gain from LDP
2012[7]
Party Candidate Votes % ±%
LDP – Kōmeitō Noriko Miyagawa 54,930 43.6 new
JRP – YP Sakihito Ozawa (elected by PR) 34,414 27.3 −32.9
DPJ – PNP Tsuyoshi Saitō 26,070 20.7 new
JCP Michitaka Uemura 10,694 8.5 new
2009[8]
Party Candidate Votes % ±%
DPJ Sakihito Ozawa 91,422 60.2 +12.7
LDP – Kōmeitō Masaaki Akaike 46,881 30.9 −13.3
JCP Akiko Endō 11,972 7.9 −0.3
HRP Hiroyuki Hayase 1,480 1.0 new
2005[9]
Party Candidate Votes % ±%
DPJ Sakihito Ozawa 70,281 47.5 −7.4
LDP – Kōmeitō Masaaki Akaike (elected by PR) 65,426 44.2 new
JCP Akiko Endō 12,173 8.2 −2.2
2003[10]
Party Candidate Votes % ±%
DPJ Sakihito Ozawa 71,623 54.9 +12.9
LDP Kenzō Yoneda 45,282 34.7 new
JCP Akiko Endō 13,545 10.4 +1.4
2000[11]
Party Candidate Votes % ±%
DPJ Sakihito Ozawa 58,781 42.0 new
LDP Eiichi Nakao 52,964 37.8 −1.1
Independent Nobuaki Akaike 15,803 11.3 new
JCP Akiko Endō 12,538 9.0 new
1996[12]
Party Candidate Votes % ±%
LDP Eiichi Nakao 52,111 38.9 N/A
DPJ Azuma Koshiishi 45,288 33.8 N/A
NFP Hitoshi Gotō 25,265 18.9 N/A
JCP Susumu Kogoshi 10,610 7.9 N/A
LL Shigemoto Ishikawa 753 0.6 N/A

References

  1. ^ Ministry of general affairs: 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 [Number of registered voters and overseas voters as of September 2, 2012] (in Japanese)
  2. ^ 開票速報 小選挙区：山梨 - 2026衆議 (in Japanese). NHK. Retrieved 3 March 2026.
  3. ^ 日本放送協会. "衆議院選挙2024 山梨 開票速報・選挙結果 NHK". www.nhk.or.jp (in Japanese). Retrieved 2025-03-31.
  4. ^ 小選挙区 山梨１区 [Single-seat constituency Yamanashi 1st district] (in Japanese). NHK. 2021. Retrieved 25 June 2023.
  5. ^ 小選挙区 山梨１区 [Single-seat constituency Yamanashi 1st district] (in Japanese). NHK. 2017. Archived from the original on 10 October 2017. Retrieved 25 June 2023.
  6. ^ 2014年12月14日(日) 投票 小選挙区 山梨１区 [Vote on Sunday, December 14, 2014 Single-seat constituency Yamanashi 1st district] (in Japanese). NHK. Archived from the original on 13 November 2024. Retrieved 25 June 2023.
  7. ^ 総選挙2012>開票結果 小選挙区 山梨 [General Election 2012>Vote Counting Results Single-Seat Constituency Yamanashi]. Yomiuri Shimbun (in Japanese). Retrieved 2013-02-09.
  8. ^ 総選挙2009>開票速報 小選挙区 山梨 [General Election 2009>Election Count Report Single-Seat Constituency Yamanashi]. Yomiuri Shimbun (in Japanese). Retrieved 2013-02-09.
  9. ^ 総選挙2005>開票速報 小選挙区 山梨 [General Election 2005>Election Count Report Single-Seat Constituency Yamanashi]. Yomiuri Shimbun (in Japanese). Retrieved 2013-02-09.
  10. ^ 第43回衆議院議員選挙 - 山梨1区 [43rd House of Representatives Election - Yamanashi 1st District]. go2senkyo.com (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-04. Retrieved 2013-02-09.
  11. ^ 第42回衆議院議員選挙 - 山梨1区 [42nd House of Representatives Election - Yamanashi 1st District]. go2senkyo.com (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-04. Retrieved 2013-02-09.
  12. ^ 第41回衆議院議員選挙 - 山梨1区 [41st House of Representatives Election - Yamanashi 1st District]. go2senkyo.com (in Japanese). Heartbeats Corp. Archived from the original on 2012-04-28. Retrieved 2013-02-09.

allikas: https://en.wikipedia.org/wiki/Yamanashi_1st_district