# Tokyo 16th district

Tokyo 16th District (東京都第16区, Tokyo-to dai-juroku-ku) is an electoral district of the Japanese House of Representatives. The district was created in 1994 as a part of the move towards single-member districts. In 2024 the district was won by the Liberal Democratic member Yōhei Ōnishi, son of Hideo Ōnishi. who was Representative 2012 – 2024.

## Areas covered
### Current district

As of 16 January 2023, the areas covered by this district are as follows:
* Edogawa
** Chuo 1-3, Matsue 1-7, Osugi 1-5, Nishi-Ichinoe 1-4, Haruecho 4, Ichinoe 1-8, Nishimizue 4, Edogawa 4, Matsumoto 1-2
** Kasai, Tobu and Shishibone
As part of the 2022 redistricting, the former town of Komatsugawa was transferred to the 14th district.

### Areas 2017–2022

From the second redistricting in 2017 until the third redistricting in 2022, the areas covered by this district were as follows:
* Edogawa (Koiwa, excluding Kamiishiki 1-3, Honisshiki 1-3, and Okinomiya)
** Chuo 1-4, Matsushima 1-4, Matsue 1-7, Higashikomatsugawa 1-4, Nishikomatsugawa, Osugi 1-5, Nishi Ichinoe 1-4, Haruecho 4, Ichinoe 1-8, Nishimizue 4, Edogawa 4, Matsumoto 1-2
** Within the Komatsugawa, Kasai, Tobu and Shishibone areas
As part of the 2017 redistricting, the former towns of Kamiishiki, Motoishiki and Okinomiya were all moved to the 17th district.

### Areas 2013–2017

From the first redistricting in 2013 until the second redistricting in 2017, the areas covered by this district were as follows:
* Edogawa
** Central Office (excluding Kami-Ishiki 3)
*** Chuo 1-4, Matsushima 1-4, Matsue 1-7, Higashikomatsugawa 1-4, Nishikomatsugawa, Osugi 1-5, Nishi Ichinoe 1-4, Haruecho 4, Ichinoe (1, 8), Nishimizue 4, Edogawa 4, Matsumoto 1-2, Kamiisshiki 1-2, Honisshiki 1-3, Okinomiyacho
** Komatsugawa, Kasai, Tobu and Shishibone areas
As part of the 2013 redistricting, the area of Kamiishiki 3 was transferred to the 17th district.

### Areas from before 2013

From the creation of the district in 1994 until the first redistricting in 2013, the areas covered by this district were as follows:
* Edogawa
** Central Office
** Komatsugawa, Kasai, Tobu and Shishibone areas

## Elected representatives

| Representative | Party | Years served | Notes |
| Yoshinobu Shimamura | LDP | 1996 – 2000 | Failed to get re-elected in the 2000 general election, won back the seat in the 2003 general election. |
| Yoshio Udagawa | Independent | 2000 – 2003 | Failed to get re-elected in the 2003 general election. |
| Yoshinobu Shimamura | LDP | 2003 – 2009 | Not re-elected in the 2009 general election |
| Akihiro Hatsushika | DPJ | 2009 – 2012 | Not re-elected in the 2012 general election. Elected to the Tokyo PR district in the 2014 and 2017 general elections. |
| Hideo Ōnishi | LDP | 2012 – 2024 | |
| Yōhei Ōnishi | LDP | 2024 – | |

## Election results

‡ - Also ran in the Tokyo PR district
‡‡ - Also ran and won in the Tokyo PR district
2024 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yōhei Ōnishi$^‡$ | 71,728 | 37.3 | 1.4 |
| | CDP | Katsuyuki Shibata$^{‡‡}$ | 60,714 | 31.6 | 1.8 |
| | Ishin | Hirosato Nakatsugawa [jp]$^‡$ | 28,538 | 14.9 | 2.2 |
| | Sanseitō | Masatoshi Arita | 16,636 | 8.7 | |
| | JCP | Sakae Miyamoto | 14,464 | 7.5 | 4.2 |
| Registered electors | Registered electors | Registered electors | 390,804 | | |
| Turnout | Turnout | Turnout | | 51.38 | 0.20 |
| | LDP hold | LDP hold | LDP hold | LDP hold | LDP hold |
2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Hideo Ōnishi (incumbent) (endorsed by Komeito) | 88,758 | 38.7 | 2.2 |
| | CDP | Motoko Mizuno$^‡$ | 68,397 | 29.8 | 4.8 |
| | Ishin | Hirosato Nakatsugawa$^‡$ | 39,290 | 17.1 | New |
| | JCP | Ota Ayaka | 26,819 | 11.7 | New |
| | Anti-NHK | Ken Tanaka$^‡$ | 6,264 | 2.7 | New |
| Registered electors | Registered electors | Registered electors | 465,115 | | |
| Majority | Majority | Majority | 20,361 | 8.9 | 2.6 |
| Turnout | Turnout | Turnout | 239,906 | 51.6 | 4.1 |
| | LDP hold | LDP hold | Swing | 3.8 | |
2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Hideo Onishi$^‡$ (incumbent) (endorsed by Komeito) | 84,457 | 40.9 | 5.3 |
| | CDP | Akihiro Hatsushika$^{‡‡}$ | 71,405 | 34.6 | New |
| | Kibō no Tō | Kenji Tamura$^‡$ | 50,568 | 24.5 | New |
| Registered electors | Registered electors | Registered electors | 462,216 | | |
| Majority | Majority | Majority | 13,052 | 6.3 | 13.4 |
| Turnout | Turnout | Turnout | 219,506 | 47.5 | 1.6 |
| | LDP hold | LDP hold | Swing | 6.8 | |
2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Hideo Onishi$^‡$ (incumbent) (endorsed by Komeito) | 98,536 | 46.3 | 8.3 |
| | Ishin | Akihiro Hatsushika$^{‡‡}$ (endorsed by the DPJ) | 56,701 | 26.6 | New |
| | JCP | Asako Ota$^‡$ | 36,976 | 17.4 | 11.3 |
| | Japanese Kokoro | Yoshiaki Ishii$^‡$ | 11,484 | 5.4 | New |
| | Independent | Takashi Okamoto | 9,334 | 4.4 | New |
| Registered electors | Registered electors | Registered electors | 455,218 | | |
| Majority | Majority | Majority | 41,835 | 19.7 | 0.3 |
| Turnout | Turnout | Turnout | 223,330 | 49.1 | 8.4 |
| | LDP hold | LDP hold | Swing | 6.1 | |
2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Hideo Onishi$^‡$ (incumbent) | 95,222 | 38.0 | 3.9 |
| | Restoration | Hirosato Nakatsugawa$^‡$ (incumbent - Tokyo PR) | 46,537 | 18.6 | New |
| | Your | Reiko Ueda$^‡$ | 43,719 | 17.3 | New |
| | Tomorrow | Akihiro Hatsushika$^‡$ (incumbent) (endorsed by the NDP) | 27,525 | 11.0 | New |
| | Democratic | Katsuyoshi Konno$^‡$ (endorsed by the PNP) | 22,741 | 9.1 | 38.3 |
| | JCP | Kayoko Shimacho | 15,145 | 6.1 | 2.5 |
| Registered electors | Registered electors | Registered electors | 452,248 | | |
| Majority | Majority | Majority | 48,685 | 19.4 | New |
| Turnout | Turnout | Turnout | 260,133 | 57.5 | 4.4 |
| | LDP gain from Democratic | LDP gain from Democratic | Swing | 9.5 | |
2009 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Akihiro Hatsushika$^‡$ | 128,400 | 47.4 | 14.3 |
| | LDP | Yoshinobu Shimamura (incumbent) | 113,634 | 41.9 | 15.1 |
| | JCP | Kyoichi Kawai | 23,385 | 8.6 | 1.3 |
| | Happiness Realization | Ichiro Kojima | 5,763 | 2.1 | New |
| Registered electors | Registered electors | Registered electors | 450,445 | | |
| Majority | Majority | Majority | 14,766 | 5.5 | New |
| Turnout | Turnout | Turnout | 279,006 | 61.9 | 1.5 |
| | Democratic gain from LDP | Democratic gain from LDP | Swing | 8.2 | |
2005 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yoshinobu Shimamura$^‡$ | 145,439 | 57.0 | 21.7 |
| | Democratic | Hirosato Nakatsugawa$^‡$ (incumbent - Tokyo PR) | 84,564 | 33.1 | 2.1 |
| | JCP | Yasunori Abe | 25,328 | 9.9 | 2.0 |
| Registered electors | Registered electors | Registered electors | 439,858 | | |
| Majority | Majority | Majority | 60,875 | 23.9 | 19.4 |
| Turnout | Turnout | Turnout | 265,498 | 60.4 | 6.1 |
| | LDP hold | LDP hold | Swing | 13.3 | |
2003 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yoshinobu Shimamura$^‡$ | 80,015 | 35.3 | 4.9 |
| | Democratic | Hirosato Nakatsugawa$^{‡‡}$ (incumbent - Tokyo PR) | 70,189 | 31.0 | 6.3 |
| | Independent Society | Yoshi Udagawa | 58,250 | 25.7 | New |
| | JCP | Yasunori Abe$^‡$ | 17,985 | 7.9 | 5.7 |
| Registered electors | Registered electors | Registered electors | 432,954 | | |
| Majority | Majority | Majority | 9,826 | 4.3 | New |
| Turnout | Turnout | Turnout | 234,964 | 54.3 | 2.1 |
| | LDP gain from Independent | LDP gain from Independent | Swing | 6.7 | |
2000 :
| Party | Party | Candidate | Votes | % | ±% |
| | Independent | Yoshio Udagawa | 72,825 | 32.1 | New |
| | LDP | Yoshinobu Shimamura$^‡$ (incumbent) | 69,543 | 30.6 | 8.4 |
| | Democratic | Hirosato Nakatsugawa$^{‡‡}$ | 53,897 | 23.7 | New |
| | JCP | Yasunori Abe | 30,772 | 13.6 | 0.4 |
| Registered electors | Registered electors | Registered electors | 417,198 | | |
| Majority | Majority | Majority | 3,282 | 1.5 | New |
| Turnout | Turnout | Turnout | 235,133 | 56.4 | 4.8 |
| | Independent gain from LDP | Independent gain from LDP | Swing | N/A | |
1996 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yoshinobu Shimamura$^‡$ (incumbent - former Tokyo 10th District) | 77,753 | 39.0 | New |
| | New Frontier | Naoko Sato | 64,942 | 32.6 | New |
| | Democratic | Kazuo Inoue$^‡$ | 28,805 | 14.4 | New |
| | JCP | Yasunori Abe | 27,923 | 14.0 | New |
| Registered electors | Registered electors | Registered electors | 396,286 | | |
| Majority | Majority | Majority | 12,811 | 6.4 | New |
| Turnout | Turnout | Turnout | 204,444 | 51.6 | New |
| | LDP win (new seat) | LDP win (new seat) | LDP win (new seat) | LDP win (new seat) | LDP win (new seat) |