| Southern Kanto Proportional Representation Block | |
| Type: | Parliamentary |
| Parl Name: | Japanese House of Representatives |
| District Label: | Prefectures |
| District: | Chiba, Kanagawa, Yamanashi |
| Population: | 16,228,000 (October 2019 estimate)[1] |
| Electorate: | 13,657,015[2] |
| Members Label: | Representatives |
| Members: | 22 [3] |
The Southern Kantō proportional representation block is one of eleven proportional representation (PR) "blocks", multi-member constituencies for the House of Representatives in the Diet of Japan. It consists of Southern parts of the Kantō region covering Chiba, Kanagawa and Yamanashi prefectures. Following the introduction of proportional voting it initially elected 23 representatives in the 1996 general election, then 21 after the total number of PR seats had been reduced from 200 to 180, and 22 representatives since the reapportionment of 2002.
With a district magnitude of 22, Southern Kantō is the second largest PR block behind Kinki and gives smaller parties an opportunity to pick up seats.
| general election | LDP | JCP | NFP ('96)/LP ('00)/ TPJ ('12)/PLP ('14) | JRP ('12)/JIP ('14) | Others | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | Votes | % | Seats | ||
| 1996 | 1,331,850 | 23.5 | 5 | 1,820,846 | 32.1 | 7 | – | 403,875 | 7.1 | 3 | 280,391 | 4.9 | 1 | 1,667,552 | 29.4 | 7 | – | – | 174,662 | 3.1 | 0 | |||||||
| 2000 | 1,940,792 | 27.7 | 6 | 1,734,297 | 24.7 | 6 | 871,150 | 12.4 | 3 | 808,453 | 11.5 | 2 | 670,141 | 9.6 | 2 | 839,845 | 12.0 | 2 | – | – | 145,858 | 2.1 | 0 | |||||
| 2003 | 2,819,165 | 40.0 | 9 | 2,441,590 | 34.6 | 8 | 969,464 | 13.7 | 3 | 521,309 | 7.4 | 1 | 300,599 | 4.3 | 1 | – | – | – | – | |||||||||
| 2005 | 2,439,549 | 29.5 | 7 | 3,510,617 | 42.4 | 10 | 1,007,504 | 12.2 | 3 | 566,945 | 6.8 | 1 | 444,753 | 5.4 | 1 | – | – | – | 309,851 | 3.7 | 0 | |||||||
| 2009 | 3,695,159 | 43.0 | 11 | 2,233,560 | 26.0 | 6 | 862,427 | 10.0 | 2 | 601,259 | 7.0 | 1 | 369,754 | 4.3 | 1 | – | – | 605,358 | 7.0 | 1 | 226,946 | 2.6 | 0 | |||||
| 2012 | 1,323,048 | 17.3 | 4 | 2,020,043 | 26.4 | 6 | 810,936 | 10.6 | 2 | 447,890 | 5.9 | 1 | 147,191 | 1.9 | 0 | 477,309 | 6.2 | 1 | 1,443,270 | 18.9 | 5 | 951,294 | 12.4 | 3 | 20,987 | 0.3 | 0 | |
| 2014[4] | 1,203,572 | 17.6 | 4 | 2,321,609 | 34.0 | 8 | 875,712 | 12.8 | 3 | 813,634 | 11.9 | 3 | 132,542 | 1.9 | 0 | 175,431 | 2.6 | 0 | 1,053,221 | 15.4 | 4 | – | 260,648 | 3.9 | 0 | |||
| 2017 | 2,356,614 | 787,461 | ||||||||||||||||||||||||||
| 2021 | 2,590,787 | 850,667 | ||||||||||||||||||||||||||
Party names are abbreviated as follows (format: abbreviation, translated name, Japanese name, English name):
Note: Party affiliations as of election day.
| 1996– | 2000– | 2003– | 2005– | 2009– | 2012– | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Kazuo Shii | |||||||||||
| Takeshi Ōmori | Tomoko Abe | Tomoko Abe | |||||||||
| Yūichi Gotō | |||||||||||
| Hitoshi Gotō | Sōichirō Okuno | ||||||||||
| Kimiaki Matsuzaki | Yasuhiko Wakai | ||||||||||
| Shun Hayama | Hisayasu Nagata resigned 2006, replaced by Motohisa Ikeda | Yukio Ubukata | |||||||||
| Ken'ichirō Satō | Yōichirō Aoyagi | ||||||||||
| Katsuhito Nakajima | |||||||||||
| Akira Ōide | Hirohisa Fujii | Tsuyoshi Shiina | |||||||||
| Shigeyuki Tomita | Sakihito Ozawa | ||||||||||
| Noriko Furuya | Manabu Matsuda | ||||||||||
| Nobuo Kawakami | Takashi Tanuma | ||||||||||
| Yūichi Ichikawa | Shigeyuki Tomita | Yōichirō Esaki | Yuzuru Nishida | ||||||||
| Nobuo Kawakami | Tamotsu Shiiki | ||||||||||
| Isamu Ueda | Shōzaburō Nakamura | colspan="2" | Shigeyuki Tomita | ||||||||
| colspan="2" | Noriko Furuya | ||||||||||
| Akira Amari | Shin'ichi Nakatani | ||||||||||
| Kenzō Yoneda | Hiroaki Kadoyama | ||||||||||
| Noriko Horiuchi | |||||||||||
| Yoshitaka Sakurada | Norihiko Nakayama | ||||||||||
| Hiromichi Watanabe | Kazunori Tanaka | Tomohiro Yamamoto | |||||||||
| Kunio Tanabe | – | Hirokazu Matsuno | Mineyuki Fukuda | ||||||||
| Kazunori Tanaka | – | ||||||||||
| LDP: 2,233,560 votes (26.0%), 6 seats | DPJ: 3,695,159 votes (43.0%), 11 seats | Kōmeitō: 862,427 votes (10.0%), 2 seats | |||||||||||||||
| Candidate | District | Elected | Candidate | District | "Loss ratio" | Elected | Candidate | District | "Loss ratio" | Elected | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 97.3% | Elected | 1 | 99.5% | Elected | 1 | PR only | Elected | |||||||||
| 90.8% | Elected | 96.3% | Elected | 2 | Elected | ||||||||||||
| 87.1% | Elected | 85.5% | Elected | 3 | – | ||||||||||||
| 82.9% | Elected | 76.1% | Elected | 4 | Takashi Kawanami | – | |||||||||||
| 77.5% | Elected | 64.0% | Elected | 5 | Masaaki Kubota | – | |||||||||||
| 76.5% | Elected | 57.8% | Elected | YP: 605,358 votes (7.0%), 1 seat | |||||||||||||
| Won district | Won district | Candidate | District | "Loss ratio" | Elected | ||||||||||||
| Won district | Won district | 1 | 79.3% | Elected | |||||||||||||
| Won district | Won district | Won district | |||||||||||||||
| Won district | Won district | 3 | Kō Tanaka | 33.2% | – | ||||||||||||
| 75.7% | – | Won district | Itoko Noyashiki | 17.4% | – | ||||||||||||
| 74.5% | – | Won district | Masanori Katō | 16.2% | – | ||||||||||||
| 74.5% | – | Won district | Yuki Kohira | 13.9% | – | ||||||||||||
| 74.2% | – | Won district | JCP: 601,299 votes (7.0%), 1 seat | ||||||||||||||
| 71.8% | – | Won district | Candidate | District | "Loss ratio" | Elected | |||||||||||
| 71.1% | – | Won district | 1 | PR only | Elected | ||||||||||||
| 69.9% | – | Won district | 2 | – | |||||||||||||
| 69.8% | – | Won district | 3 | Takashi Kasaki | 21.6% | – | |||||||||||
| 68.2% | – | Won district | Midori Fujii | 16.9% | – | ||||||||||||
| 67.5% | – | Won district | Yasuhiko Furuya | 15.4% | – | ||||||||||||
| 66.8% | – | Won district | Hiroyuki Muneta | 14.3% | – | ||||||||||||
| 66.4% | – | Won district | Chūhei Ogura | 14.3% | – | ||||||||||||
| 66.3% | – | Won district | Kazuko Saitō | 14.2% | – | ||||||||||||
| 65.3% | – | Won district | Hideo Katō | 13.9% | – | ||||||||||||
| 62.8% | – | Won district | Akiko Endō | 13.0% | – | ||||||||||||
| 58.0% | – | Won district | SDP: 369,751 votes (4.3%), 1 seat | ||||||||||||||
| 56.3% | – | Won district | Candidate | District | "Loss ratio" | Elected | |||||||||||
| 52.6% | – | Won district | 1 | 43.0% | Elected | ||||||||||||
| 51.2% | – | Won district | Keiko Ueda | 18.3% | – | ||||||||||||
| 42.3% | – | Won district | 3 | Katsuko Murakami | PR only | – | |||||||||||
| 38.7% | – | Won district | PNP: 102,992 votes (1.2%), no seat | ||||||||||||||
| 32 | PR only | – | Won district | Candidate | District | "Loss ratio" | Elected | ||||||||||
| 33 | Toshio Ukishima | – | Won district | 1 | Satoshi Ichikawa | PR only | – | ||||||||||
| 34 | Seiichi Sasaki | – | Won district | NPN: 79,792 votes (0.9%), no seat | |||||||||||||
| 35 | Kazuhiro Honma | – | 35 | PR only | Elected | Candidate | District | "Loss ratio" | Elected | ||||||||
| – | 36 | Elected | 1 | Toshihisa Kawano | PR only | – | |||||||||||
| 37 | Elected | HRP: 44,162 votes (0.5%), no seat | |||||||||||||||
| 38 | Elected | Candidate | District | "Loss ratio" | Elected | ||||||||||||
| 39 | Elected | 1 | Hakuun Kurokawa | PR only | – | ||||||||||||
| 40 | Kenji Hamaguchi | – | 2 | Mitsuharu Shiwa | – | ||||||||||||
| 41 | Kazutaka Enomoto | – | 3 | Shigehiro Ichikawa | – | ||||||||||||
| 42 | Akio Sonoda | – | 4 | Takashi Yamamoto | – | ||||||||||||
| – | 5 | Shinji Chiba | – | ||||||||||||||