# Kanagawa 11th district

Kanagawa 11th district (神奈川県第11区, Kanagawa-ken dai-juichi-ku, also 神奈川11区, Kanagawa-ken juichi-ku) is a constituency of the House of Representatives in the Diet of Japan (national legislature). It is located in Kanagawa Prefecture, and consists of the cities of Miura and Yokosuka.
This constituency has United States Fleet Activities Yokosuka where is the home port of US Naval Forces in Japan which is the integral part of United States Forces Japan, home of Seventh Fleet of United States Navy and JMSDF Yokosuka Naval Base, which hosts Fleet Submarine Force, Mine Warfare Force, Fleet Research and Development Command, Fleet Intelligence Command of Japan Maritime Self-Defense Force. It also has Nissan Oppama Plant, Yokosuka Research Park
Former Prime Minister of Japan Junichiro Koizumi served as the first representative of the constituency from its creation in 1996. Koizumi retired at the 2009 elections and his son Shinjirō ran as a candidate for his father's old seat. The Democratic Party of Japan fielded Katsuhito Yokokume, a lawyer and former participant in the Ainori TV show, as a candidate in 2009 to a bid to end the LDP dominance of the district.
As of September 2012, 391,020 eligible voters were registered in the district.

## List of representatives

| Member | Party | Dates | Electoral history | Notes |
| Junichiro Koizumi | Liberal Democratic | 20 October 1996 – 21 July 2009 | Elected in 1996. Re-elected in 2000. Re-elected in 2003. Re-elected in 2005. | Prime Minister of Japan (2001-2006) Minister of Health and Welfare (1988-1989; 1996-1998) Minister of Post and Telecommunications (1992–1993) |
| Shinjirō Koizumi | Liberal Democratic | 31 August 2009 – incumbent | Elected in 2009. Re-elected in 2012. Re-elected in 2014. Re-elected in 2017. Re-elected in 2021. Re-elected in 2024 | Minister of the Environment (2019-2021) Second son of Jun'ichirō Koizumi |

## Election results

2024 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Shinjirō Koizumi | 129,779 | 72.3 | 6.9 |
| | JCP | Minoru Tameso | 24,850 | 13.8 | 7 |
| | Sanseitō | Hiroki Hajikano | 24,718 | 13.7 | |
| Turnout | Turnout | Turnout | 179,347 | 51.79 | 0.42 |
2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Shinjirō Koizumi | 147,634 | 79.2 | 1.2 |
| | JCP | Nobuaki Hayashi | 38,843 | 20.8 | 9.8 |
| Turnout | Turnout | Turnout | | 52.21 | 0.1 |
2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Shinjirō Koizumi | 154,761 | 78.0 | 5.3 |
| | JCP | Kazuhiro Seto | 21,874 | 11.0 | 5.7 |
| | Kibō no Tō | Ryō Mashiro | 18,583 | 9.4 | |
| Turnout | Turnout | Turnout | | 52.11 | 2.4 |
2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Shinjirō Koizumi | 168,953 | 83.3 | 3.4 |
| | JCP | Kazuhiro Seto | 33,930 | 16.7 | 9.0 |
| Turnout | Turnout | Turnout | | 54.50 | |
2012 :
| Party | Candidate | Votes | % |
| LDP | Shinjirō Koizumi | 184,360 | 79.9 |
| Democratic | Kōtarō Hayashi | 25,134 | 10.9 |
| JCP | Michio Saida | 17,740 | 7.7 |
| Independent | Toshihide Morimoto | 2,131 | 0.9 |
| Independent | Yoshinobu Iwata | 1,489 | 0.6 |
2009 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Shinjirō Koizumi | 150,893 | 56.16 | 17.00 |
| | Democratic | Katsuhito Yokokume | 96,631 | 35.97 | 17.20 |
| | JCP | Masako Itō | 12,601 | 4.69 | 0.47 |
| | Happiness Realization Party | Akihisa Tsurukawa | 2,375 | 0.88 | N/A |
| | Independent | Yoshinobu Iwata | 1,830 | 0.68 | N/A |
| Majority | Majority | Majority | 54,262 | 20.20 | 34.19 |
| Turnout | Turnout | Turnout | 268,666 | 68.12 | 0.34 |
| | LDP hold | LDP hold | Swing | -17.10 | |
2005 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Junichiro Koizumi | 197,037 | 73.16 | −1.26 |
| | Democratic | Tsuyoshi Saitō | 50,551 | 18.77 | 0.0 |
| | JCP | Kazuhiro Seto | 11,377 | 4.22 | −1.59 |
| | Independent | Naoto Amaki | 7,475 | 2.78 | 0.0 |
| | Independent | Hideyoshi Hashiba | 2,874 | 1.07 | 0.0 |
| Majority | Majority | Majority | 146,486 | 54.39 | −0.28 |
| Turnout | Turnout | Turnout | 272,431 | 68.46 | 8.55 |
| | LDP hold | LDP hold | Swing | | |
2003 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Junichiro Koizumi | 174,374 | 74.42 | 5.40 |
| | Democratic | Yusuke Sawaki | 46,290 | 19.76 | 1.02 |
| | JCP | Kazuhiro Seto | 13,632 | 5.82 | 0.0 |
| Majority | Majority | Majority | 128,084 | 54.67 | 4.38 |
| Turnout | Turnout | Turnout | 238,996 | 59.91 | 0.52 |
| | LDP hold | LDP hold | Swing | | |
2000 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Junichiro Koizumi | 157,335 | 69.03 | 10.87 |
| | Democratic | Yusuke Sawaki | 42,707 | 18.74 | 0.0 |
| | JCP | Yasushi Koizumi | 27,890 | 12.24 | 0.0 |
| Majority | Majority | Majority | 114,628 | 50.29 | 18.30 |
| Turnout | Turnout | Turnout | | 59.39 | −0.26 |
| | LDP hold | LDP hold | Swing | | |
1996 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Junichiro Koizumi | 118,955 | 58.16 | 0.0 |
| | New Frontier | Tadatsugu Miyagi | 53,523 | 26.17 | 0.0 |
| | JCP | Mitsutaka Yoshida | 27,518 | 13.45 | 0.0 |
| | Liberal League | Seiichi Hata | 4,552 | 2.23 | 0.0 |
| Majority | Majority | Majority | 65,432 | 31.99 | 0.0 |
| Turnout | Turnout | Turnout | | 59.65 | 0.0 |
| | LDP hold | LDP hold | Swing | | |