# Tokyo 23rd district

Tokyo 23rd Ward (東京都第23区, Tokyo dai-ni-jusan-ku) is an electoral district in the Japanese House of Representatives. The district was established in 1994 at the introduction of the single member constituency system.

## Areas covered
### Current district

As of 12 January 2023, the areas that are covered by this district are as follows:
* Machida
As part of the 2022 reapportionments, the remaining sections of Tama were given to the new 30th district. As a result of this the 23rd district became the only district in Western Tokyo to be composed of a single municipality.

### Areas 2017–2022

Between the first redistricting in 2017 and the second redistricting in 2022, the areas covered by this district were as follows:
* Machida
* Parts of Tama
** Sekido 5 (excluding 1-8 & 13-31), Sekido 6, Kaitori, Gouda, Wada, Mogusa, Ochikawa, Higashiterakata, Sakuragaoka 1-4, Hijirigaoka 1 (1-24, 35, Excluding 44), Umabikizawa 1-2, Sannoshita, Nakazawa, Karakida, Suwa 1-6, Nagayama 1-7, Kaitori 1-5, Toyogaoka 1-6, Ochiai 1-6 Chome, Tsurumaki 1-6, Minamino 1-3, Higashi Terakata 3, Wada 3, Atago 1-4
As part of the 2017 redistricting, part of Tama was transferred to the 21st district.

### Areas from before 2017

From the districts creation in 1994 and its first redistricting in 2017, the areas covered by this district were as follows:
* Machida
* Tama

## Elected representatives

| Representative | Party | Years served | Notes |
| Kosuke Ito | LDP | 1996 – 2009 | Lost re-election in the 2009 general election. He initially intended to run again as an independent in 2012, after the Liberal Democratic nomination was given to Masanobu Ogura. However, he withdrew his candidacy to support the candidacy of his son, Shunsuke Ito, who was running for the Japan Restoration Party. |
| Mari Kushibuchi | DPJ | 2009 – 2012 | Lost re-election in the 2012 general election. She was later chosen to replace Tarō Yamamoto in the Tokyo PR district after he resigned, since she had been the next highest Reiwa Shinsengumi member in the 2021 general election. She currently serves in the seat as a co-representative with Akiko Oishi at the recommendation of Yamamoto. |
| Masanobu Ogura | LDP | 2012 – 2024 | |
| Shunsuke Ito | CDP | 2024 – | |

## Election results

‡ - Also ran in the Tokyo PR district
‡‡ - Also ran in the Tokyo PR district and won.
2024 :
| Party | Party | Candidate |
| | Constitutional Democratic | Shunsuke Ito |
| | Liberal Democratic | Osamu Yoshiwara |
| | Your | AI Mayor |
| Registered electors | Registered electors | Registered electors |
| Turnout | Turnout | Turnout |
2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Masanobu Ogura$^‡$ (incumbent) (endorsed by Komeito) | 133,206 | 51.3 | 6.3 |
| | Constitutional Democratic | Shunsuke Ito$^{‡‡}$ (incumbent - Tokyo PR) (endorsed by Reiwa Shinsengumi and the SDP Tokyo branch) | 126,732 | 48.8 | New |
| Registered electors | Registered electors | Registered electors | 458,998 | | |
| Turnout | Turnout | Turnout | 268,055 | 58.4 | 2.6 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 5.1 | |
2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Masanobu Ogura$^‡$ (incumbent) (endorsed by Komeito) | 110,522 | 45.0 | 3.8 |
| | Kibō no Tō | Shunsuke Ito$^‡$ | 76,450 | 31.1 | New |
| | Communist | Ryosuke Matsumura | 58,929 | 24.0 | 10.2 |
| Registered electors | Registered electors | Registered electors | 455,437 | | |
| Turnout | Turnout | Turnout | 254,088 | 55.8 | 0.2 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 7.4 | |
2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Masanobu Ogura$^‡$ (incumbent) (endorsed by Komeito) | 104,709 | 41.2 | 11.0 |
| | Democratic | Mari Kushibuchi$^‡$ (endorsed by Greens Japan) | 63,706 | 25.0 | 2.9 |
| | Restoration | Shunsuke Ito$^‡$ | 50,836 | 20.0 | 0.5 |
| | Communist | Ryosuke Matsumura | 35,166 | 13.8 | 6.5 |
| Registered electors | Registered electors | Registered electors | 466,399 | | |
| Turnout | Turnout | Turnout | 261,370 | 56.0 | 8.3 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 8.0 | |
2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Masanobu Ogura$^‡$ (endorsed by Komeito) | 87,192 | 30.2 | 4.9 |
| | Democratic | Mari Kushibuchi$^‡$ (endorsed by the PNP) | 63,969 | 22.1 | 32.3 |
| | Restoration | Shunsuke Ito$^‡$ | 59,166 | 20.5 | New |
| | Your | Tetsuya Shirakawa | 39,676 | 13.7 | New |
| | Communist | Ryosuke Matsumara | 21,006 | 7.3 | 1.7 |
| | Tomorrow | Takashi Ishii$^‡$ | 18,125 | 6.3 | New |
| Registered electors | Registered electors | Registered electors | 463, 214 | | |
| Turnout | Turnout | Turnout | 297,800 | 64.3 | 4.5 |
| | Liberal Democratic gain from Democratic | Liberal Democratic gain from Democratic | Swing | 12.3 | |
2009 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Mari Kushibuchi$^‡$ | 168,346 | 54.4 | 18.3 |
| | Liberal Democratic | Kosuke Ito$^‡$ (incumbent) (endorsed by Komeito) | 108,528 | 35.1 | 19.6 |
| | Communist | Yoshiyasu Furuhashi | 27,699 | 9.0 | 0.2 |
| | Happiness Realization | Youhei Matsuo | 4,885 | 1.6 | New |
| Registered electors | Registered electors | Registered electors | 461,006 | | |
| Turnout | Turnout | Turnout | 317,080 | 68.8 | 0.8 |
| | Democratic gain from Liberal Democratic | Democratic gain from Liberal Democratic | Swing | 12.3 | |
2005 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kosuke Ito$^‡$ (incumbent) | 162,351 | 54.7 | 6.2 |
| | Democratic | Eiko Ishige$^‡$ (incumbent - Tokyo PR) | 107,136 | 36.1 | 6.2 |
| | Communist | Tomohide Murotani | 27,232 | 9.2 | 0.0 |
| Registered electors | Registered electors | Registered electors | 445,766 | | |
| Turnout | Turnout | Turnout | 302,898 | 68.0 | 6.9 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 7.6 | |
2003 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kosuke Ito$^‡$ (incumbent) | 126,221 | 48.5 | 8.9 |
| | Democratic | Eiko Ishige$^{‡‡}$ (incumbent - Tokyo PR) | 110,266 | 42.3 | 7.9 |
| | Communist | Junichiro Imamura | 23,943 | 9.2 | 5.1 |
| Registered electors | Registered electors | Registered electors | 437,355 | | |
| Turnout | Turnout | Turnout | 267,268 | 61.1 | 1.8 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | 5.1 | |
2000 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kosuke Ito$^‡$ (incumbent) | 100,271 | 39.6 | 1.2 |
| | Democratic | Eiko Ishige$^{‡‡}$ (incumbent - Tokyo PR) | 87,232 | 34.4 | 14.0 |
| | Communist | Yoko Sato | 36,113 | 14.3 | 4.1 |
| | Liberal | Akihisa Nagao$^‡$ | 20,986 | 8.3 | New |
| | Independent | Mitsuyoshi Tsukahara | 6,172 | 2.4 | New |
| | Liberal League | Yutaka Yamaguchi | 2,570 | 1.0 | 0.7 |
| Registered electors | Registered electors | Registered electors | 413,515 | | |
| Turnout | Turnout | Turnout | 266,518 | 62.9 | 5.0 |
| | Liberal Democratic hold | Liberal Democratic hold | Swing | | |
1996 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kosuke Ito$^‡$ (incumbent - former Tokyo 11th district) | 85,035 | 38.4 | New |
| | New Frontier | Maki Kitasato | 46,821 | 21.1 | New |
| | Democratic | Junjiro Sase$^‡$ | 45,182 | 20.4 | New |
| | Communist | Hajime Kurosawa | 40,870 | 18.4 | New |
| | Liberal League | Yoshio Minemura$^‡$ | 3,686 | 1.7 | New |
| Registered electors | Registered electors | Registered electors | 393,558 | | |
| Turnout | Turnout | Turnout | 227,791 | 57.9 | N/A |
| | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) | Liberal Democratic win (new seat) |