Ibaraki at-large district
| Ibaraki at-large district | |
|---|---|
| 茨城県選挙区 | |
| Parliamentary constituency for the House of Councillors | |
| Prefecture | Ibaraki |
| Electorate | 2,362,192[1] |
| Current constituency | |
| Created | 1947 |
| Seats | 4 |
| Councillors | Class of 2028:
Class of 2031: |
The Ibaraki at-large district (Japanese: 茨城県選挙区, Hepburn: Ibaraki-ken senkyoku) is a constituency that represents Ibaraki Prefecture in the House of Councillors in the Diet of Japan. It has four Councillors in the 248-member house.
Outline
The constituency represents the entire population of Ibaraki Prefecture. The district elects four Councillors to six-year terms, two each at alternating elections held every three years. The district has 2,362,192 registered voters as of July 2025.[1] The Councillors currently representing Ibaraki are:
- Akiyoshi Katō (Liberal Democratic Party (LDP), first term; term ends in 2028)[2]
- Makiko Dōgomi (Democratic Party For the People (DPFP), first term; term ends in 2028)[3]
- Ryōsuke Kōzuki (LDP, third term; term ends in 2031)[4]
- Shoko Sakurai (Sanseitō, first term; term ends in 2031)[5]
Elected Councillors
| Class of 1947 | Election year | Class of 1950 (3-year term in 1947) | ||
|---|---|---|---|---|
| Yasuji Yūki (Ind.)[note 1] |
Masaji Shibata (Liberal)[note 2] |
1947 | Nobuo Ōhata (Social Democratic) |
Tsuneo Ikeda (Ind.)[note 3] |
| 1950 | Yūichi Kōri (Liberal) |
Shichihei Kikuta (National Democratic) | ||
| Shigefumi Miyata (Liberal) |
1950 by-election[note 4] | |||
| Tsunesuke Mutō (Kaishintō) |
1953 | |||
| 1956 | Yūichi Kōri (LDP) |
Motojiro Mori (Social Democratic) | ||
| Tsunesuke Mutō[note 5] (LDP) |
Sōzō Ōmori (Social Democratic) |
1959 | ||
| 1962 | ||||
| Ichiji Suzuki (LDP) |
1963 by-election[note 6] | |||
| Kishirō Nakamura[note 7] (LDP) |
1965 | |||
| 1968 | ||||
| Fujio Takeuchi[note 8] (LDP) |
1971 | |||
| Tomi Nakamura (Minor party)[note 9] |
1972 by-election[note 10] | |||
| 1974 | Taeko Iwakami[note 11] (Minor party)[note 12] |
Osamu Yatabe (Social Democratic) | ||
| Yūichi Kōri (LDP) |
1975 by-election[note 13] | |||
| Michitada Takasugi (Social Democratic) |
1977 | |||
| [note 14]1978 by-election | Nirō Iwakami[note 15] (LDP) | |||
| 1980 | ||||
| Ikuo Soneda (LDP) |
1983 | |||
| 1986 | ||||
| Makoto Taneda (Social Democratic) |
Akio Kanō[note 16] (LDP) |
1989 | ||
| [note 17]1989 by-election | Itsuo Nomura (LDP) | |||
| Yasu Kanō[note 18] (LDP) |
1992 by-election[note 19] | |||
| 1992 | ||||
| Moto Kobayashi (New Frontier) |
1995 | |||
| 1998 | Kōichi Kuno[note 20] (LDP) |
Akira Gunji (DPJ) | ||
| Moto Kobayashi (DPJ) |
2001 | |||
| 2003 by-election[note 21] | Hiroshi Okada (LDP) | |||
| 2004[10] | ||||
| Yukihisa Fujita (DPJ) |
Tamon Hasegawa (LDP) |
2007[11] | ||
| 2010[12] | ||||
| Ryōsuke Kōzuki (LDP) |
2013[13] | |||
| 2016[14] | Akira Gunji (DP) | |||
| Takumi Onuma (CDP) | 2019[15] | |||
| 2022[16] | Akiyoshi Katō (LDP) | Makiko Dōgomi (Ind.)[note 22] | ||
| Shoko Sakurai (Sanseitō) |
2025[1] | |||
- ^ Later joined Ryokufūkai[6]
- ^ Died in office 15 September 1950[7]
- ^ Later joined the Labourers and Farmers Party[7]
- ^ Held 3 November 1950[6]
- ^ Died in office 6 August 1963[6]
- ^ Held 18 September 1963[7]
- ^ Died in office 21 December 1971[8]
- ^ Resigned 14 March 1975[8]
- ^ Wife of the deceased Kishirō Nakamura. Ran as a candidate of a minor party,[9] but later joined the LDP[8]
- ^ Held 6 February 1972[8]
- ^ Resigned 21 December 1977[7]
- ^ Elected as a candidate for the Ibaraki Agricultural Federation. Later joined the LDP[7]
- ^ Held 27 April 1975[7]
- ^ Held 5 February 1978[7]
- ^ Husband of Taeko Iwakami. Died in office 16 August 1989[7]
- ^ Died in office 26 February 1992[7]
- ^ Held 1 October 1989[7]
- ^ Wife of Akio Kanō
- ^ Held 12 April 1992[9]
- ^ Died in office 17 October 2002
- ^ Held 27 April 2003[9]
- ^ Joined Democratic Party For the People in December 2025[17]
Election results
Elections in the 2020s
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Ryōsuke Kōzuki (endorsed by Komeito) |
417,601 | 33.5 | ||
| Sanseito | Shoko Sakurai | 308,772 | 24.8 | ||
| CDP | Takumi Onuma | 280,716 | 22.6 | ||
| Ishin | Serina Kitasaki | 102,445 | 8.2 | ||
| JCP | Sei'ichirō Takahashi | 66,866 | 5.4 | ||
| Independent | Yasushi Makiyama | 36,529 | 2.9 | ||
| Anti-NHK | Akio Sagai | 16,771 | 1.3 | ||
| Japan Reform Party | Ken'ichirō Ishii | 15,148 | 1.2 | ||
| Turnout | 54.67 | ||||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Akiyoshi Katō (endorsed by Komeito) |
544,187 | 49.9 | ||
| Independent | Makiko Dōgomi (endorsed by CDP, DPFP) |
197,292 | 18.1 | ||
| Ishin | Rika Sasaki | 159,017 | 14.6 | ||
| JCP | Kumiko Ōuchi | 105,735 | 9.7 | ||
| Sanseito | Masaya Kikuchi | 48,582 | 4.5 | ||
| Anti-NHK | Daichi Murata | 16,966 | 1.6 | ||
| Anti-NHK | Shigeyuki Niwa | 14,724 | 1.3 | ||
| Independent | Tetsumasa Nakandakari | 4,866 | 0.4 | ||
| Turnout | |||||
Elections in the 2010s
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Ryōsuke Kōzuki (endorsed by Komeito) |
507,260 | 47.9 | ||
| CDP | Takumi Onuma (endorsed by SDP) |
237,614 | 22.4 | ||
| JCP | Kumiko Ōuchi | 129,151 | 12.2 | ||
| Ishin | Tōru Umino | 125,542 | 11.9 | ||
| Anti-NHK | Ken Tanaka | 58,978 | 5.6 | ||
| Turnout | |||||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Hiroshi Okada (endorsed by Komeito) |
609,636 | 50.3 | ||
| Democratic | Akira Gunji | 306,050 | 25.3 | ||
| JCP | Kyoko Kobayashi | 113,833 | 9.4 | ||
| Ishin | Yūko Mutō (endorsed by Genzei Nippon) |
86,866 | 7.2 | ||
| Independent | Junko Ishihara | 78,655 | 6.5 | ||
| Happiness Realization | Koki Nakamura | 16,282 | 1.3 | ||
| Turnout | 50.8 | ||||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Ryosuke Kouzuki (endorsed by Komeito) |
560,642 | 48.4 | ||
| Democratic | Yukihisa Fujita | 204,021 | 17.6 | ||
| Your | Junko Ishihara | 153,403 | 13.3 | ||
| Restoration | Akira Ishii | 127,823 | 11.0 | ||
| JCP | Kyoko Kobayashi | 97,197 | 8.4 | ||
| Happiness Realization | Koki Nakamura | 14,586 | 1.3 | ||
| Turnout | |||||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Hiroshi Okada | 499,566 | 38.7 | ||
| Democratic | Akira Gunji (Endorsed by People's New Party) |
307,022 | 23.8 | ||
| Democratic | Tomohiro Nagatsuka | 204,753 | 15.9 | ||
| Your | Shigenori Okawa | 151,375 | 11.7 | ||
| Sunrise | Rie Yoshida | 65,913 | 5.1 | ||
| JCP | Nobutoshi Inaba | 50,136 | 3.9 | ||
| Happiness Realization | Koki Nakamura | 11,664 | 0.9 | ||
| Turnout | |||||
Elections in the 2000s
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Yukihisa Fujita | 540,174 | 43.4 | ||
| LDP | Tamon Hasegawa | 427,297 | 34.3 | ||
| Independent | Masao Ishizu | 114,358 | 9.2 | ||
| JCP | Takeo Taya | 86,288 | 6.9 | ||
| People's New | Toshitaka Kudo | 52,621 | 4.2 | ||
| Kyōsei Shintō | Hiromitsu Muto | 23,845 | 1.9 | ||
| Turnout | |||||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Hiroshi Okada (endorsed by Komeito) |
583,471 | 50.5 | ||
| Democratic | Akira Gunji | 477,948 | 41.3 | ||
| JCP | Takeo Taya | 94,837 | 8.2 | ||
| Turnout | |||||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| LDP | Hiroshi Okada | 717,140 | 80.6 | ||
| JCP | Osamu Kojima | 172,455 | 19.4 | ||
| Turnout | 39.61 | ||||
See also
- List of districts of the House of Councillors of Japan
- Ibaraki 4th district, one of seven districts that represents Ibaraki Prefecture in the House of Representatives
References
- ^ a b c d 茨城 選挙速報・結果 参議院選挙2025 – NHK [Ibaraki Election Report and Results 2025 House of Councillors Election – NHK] (in Japanese). NHK. 2025-07-25. Retrieved 2026-03-03.
- ^ "Mr.KATO Akiyoshi：House of Councillors". House of Councillors, The National Diet of Japan. Retrieved 4 March 2026.
- ^ "Ms.DOGOMI Makiko：House of Councillors". House of Councillors, The National Diet of Japan. Retrieved 4 March 2026.
- ^ "Mr.KOZUKI Ryosuke：House of Councillors". House of Councillors, The National Diet of Japan. Retrieved 4 March 2026.
- ^ "Ms.SAKURAI Shoko：House of Councillors". House of Councillors, The National Diet of Japan. Retrieved 4 March 2026.
- ^ a b c "List of Former Councillors (Ma to Wa)" (in Japanese). House of Councillors. 2007. Archived from the original on 3 September 2009. Retrieved 6 April 2016.
- ^ a b c d e f g h i j "List of Former Councillors (A to Sa)" (in Japanese). House of Councillors. 2007. Archived from the original on 2 September 2009. Retrieved 6 April 2016.
- ^ a b c d "List of Former Councillors (Ta to Ha)" (in Japanese). House of Councillors. 2007. Archived from the original on 3 September 2009. Retrieved 6 April 2016.
- ^ a b c d Satō, Yoshi (令) (December 2005). "Post-War By-Elections" (PDF) (in Japanese). national Diet Library. p. 92. Archived from the original (PDF) on 10 December 2006. Retrieved 6 April 2016.
- ^ a b "選挙区開票結果 <茨城県>" [District results (Ibaraki)]. Asahi Shimbun. Retrieved 6 April 2016.
- ^ a b "選挙区 茨城県 開票結果 参院選2007" [Ibaraki At-large district election results, 2007 House of Councillors election]. Yomiuri Shimbun. Retrieved 6 April 2016.
- ^ a b "選挙区 茨城県 開票結果 参院選2010 参院選 選挙" [Ibaraki At-large district election results, 2010 House of Councillors election]. Yomiuri Shimbun. Retrieved 6 April 2016.
- ^ a b "選挙区 茨城県 開票結果 参院選2013 参院選 選挙" [Ibaraki At-large district election results, 2013 House of Councillors election]. Yomiuri Shimbun. Retrieved 6 April 2016.
- ^ a b 選挙区 茨城|2016参院選 | 参議院選挙 | 選挙アーカイブス | NHK選挙WEB [Ibaraki Electoral District | 2016 House of Councillors Election | House of Councillors Election | Election Archives | NHK Election Web]. NHK ONE (in Japanese). NHK. 10 July 2016. Retrieved 4 March 2026.
- ^ a b "House of Councilors election 2019 electoral district Ibaraki". Retrieved 9 Nov 2023.
- ^ a b "Ibaraki House of Councilors election 2022 election news/vote counting results". Retrieved 2026-03-04.
- ^ 堂込麻紀子議員・芳賀道也議員が国民民主党に入党 | 新・国民民主党 - つくろう、新しい答え。 [Members of Diet Dogomi Makiko and Haga Michiya join the Democratic Party for the People | New Democratic Party for the People - Let's create new answers.] (in Japanese). Democratic Party For the People. 2025-12-17. Retrieved 2026-03-04.