Hokkaido 8th District
Hokkaido 8th District
Parliamentary constituency for the Japanese House of Representatives
Proportional District Hokkaido Electorate 336,828(2026)
Current constituency
Created 1996
Seats One
Representative Jun Mukoyama Subprefecture Oshima and Hiyama Hokkaidō 8th district (北海道[第]8区) is a single-member electoral district for the House of Representatives , the lower house of the National Diet of Japan. It is located in the prefecture of Hokkaidō and consists of Hokkaido's Hiyama and Oshima subprefectures .
History From 1947 the district was known as the Hokkaido 3rd district and elected three members to the House. Under the 1994 reforms that came into effect at the 1996 general election , the district's boundaries were not changed but it was renamed to the 8th district and had its representation reduced to one. This reduction was offset by the introduction of the multi-member Hokkaido proportional representation block that elects eight members to represent the entire prefecture.
List of representatives Representative Party Dates Notes Yoshio Hachiro DPJ 1996 – 2003 Switched to the Hokkaido 4th district . Seiichi Kaneta DPJ 2003 – 2009 Seiji Osaka DPJ 2009 – 2012 Kazuo Maeda LDP 2012 – 2014 won a proportional seat in the Hokkaidō block in 2014 Seiji Osaka DPJ 2014 – 2017 CDP 2017 – 2026 Jun Mukoyama LDP 2026 –
Recent results 2026 Party Candidate Votes % ±% LDP Jun Mukōyama 108,229 55.3 12.17 Centrist Reform Seiji Osaka 87,526 44.7 6.09 Turnout 195,755 59.29 2.29 LDP gain from Centrist Reform Swing 2.7
2024 Party Candidate Votes % ±% CDP Seiji Osaka 97,758 50.79 1.89 LDP Jun Mukōyama (elected in Hokkaido PR ) 83,006 43.13 4.19 JCP Katsumi Honma 11,708 6.08 6.08 Turnout 57.00
2021 Party Candidate Votes % ±% CDP Seiji Osaka 112,857 52.68 2.7 LDP Kazuo Maeda 101,379 47.32 2.7 Turnout 60.08 0.33 CDP hold Swing 2.7
2017 Party Candidate Votes % ±% CDP Seiji Osaka 125,771 55.4 8.1 LDP Kazuo Maeda 101,243 44.6 0.4 Turnout 227,014 60.41 5.82 CDP hold Swing
2014 Party Candidate Votes % ±% Democratic Seiji Osaka 97,745 47.3 LDP Kazuo Maeda[ja ] (elected in Hokkaido PR ) 91,351 44.2 JCP Yuko Harada 17,465 8.5 Turnout 206,561 54.59 4.63 Democratic gain from LDP Swing
2012 Party Candidate Votes % ±% LDP Kazuo Maeda[ja ] 107,937 47.5 Democratic Seiji Osaka 77,402 34.1 Tomorrow Mika Kitade 25,793 11.4 JCP Kadai Takahashi 15,953 7.0 Turnout 227,085 59.22 LDP gain from Democratic Swing
2009 Party Candidate Votes % ±% Democratic Seiji Osaka 171,114 62.6 LDP Keishiro Fukushima[ja ] 58,046 21.2 Independent Kenji Sato 40,090 14.7 Happiness Realization Akira Nishino 4,075 1.5
2005 Party Candidate Votes % ±% Democratic Seiichi Kaneta 134,963 49.8 LDP Kenji Sato 114,141 42.1 JCP Kazuo Maekawa 21,891 8.1
Notes