was held on 22 June 2025 to elect all 127 members to the forty-two electoral districts of the Tokyo Metropolitan Assembly.
Background Movements by political party 2021–2025 Liberal Democratic Party and Komeito In the previous 2021 election, LDP became the largest party in the Metropolitan Assembly. Nevertheless, doubts have been cast on the funding parties held following the 2024 general election in which some of the lawmakers failed to declare part of its income. An investigation found that the total amount of money not accounted for in the party's Income Declaration over the past five years was 30 million yen.東京都議会自民党、3千万円不記載か 東京地検特捜部、会計担当者ら聴取 産経新聞 2024年12月25日 After this information was disclosed, the LDP group in the assembly decided to dissolve its political organisation, excepting the assembly group.政治団体「都議会自民党」を解散 裏金事件で謝罪、会派は存続 時事通信 2025年1月17日 The Tokyo branch of Komeito decided not to refer any LDP candidates in the assembly, regardless of whether or not undeclared income existed, after learning about the issues surrounding the LDP funding parties.都議選で公明が自民推薦せず...都本部方針、不記載問題受け 讀賣新聞 2025年2月15日
Tomin First
Tomin First, for which Governor Yuriko Koike serves as senior advisor, lost its position as the main party in the assembly to the LDP. Regarding this election, it has collaborated with the DPFP since November 2024 in areas such as district redistribution of power.国民民主党と都民ファーストの会、来夏の都議選で連携を模索 選挙区調整で協議へ TOKYOMX 2024年11月18日
Opposition Parties The branches of the JCP and CDP at the Tokyo Assembly re-edited their collaboration for the 2024 gubernatorial election, in which both parties backed Renho as their candidate. They also declared their plans to collaborate in one to three districts. The aim is to prevent the ruling parties from achieving a majority in the assembly.［スキャナー］自民、逆風の都議選 投開票まで2か月...野党、共闘へ調整着々 都民ファ、状況を注視 讀賣新聞 2025年4月22日 The JCP announced its aim to secure their current 19 seats in the assembly and increase them.東京都議会議員選挙への全国からの要求対話・支持拡大、募金のご協力を訴えます しんぶん赤旗 2025年3月11日
Others
On 15 January, Shinji Ishimaru, who came second in the 2024 gubernatorial election, announced the foundation of a new party called , for which he is fielding candidates in every electoral district.【速報】石丸伸二氏が新党「再生の道」を立ち上げ...夏の東京都議選挙に向け全選挙区に候補者擁立へ フジテレビ 2025年1月15日
Assembly composition before the election GroupsPartiesSeatsTotalTokyo Liberal Democratic Party Group Liberal Democratic Party2930 Independent1Tomin First Group Tomin First2526 Democratic Party For the People1Japanese Communist Party Group Japanese Communist Party1919Komeito GroupKomeito2323Constitutional Democratic Party of Japan GroupConstitutional Democratic Party of Japan1212Mirai Group Independents34Constitutional Democratic Party of Japan1 Group to Protect FreedomIndependents22Not affiliatedIndependents47Nippon Ishin1Tokyo Seikatsusha Network1Greens Japan1Vacant33
Electoral districts
Most districts are coterminous with a municipality (-ku/-shi/-chō/-son) of the same name. The map shows the number of seats in each district. The following districts comprise multiple municipalities:
Nishi-Tama ("West Tama"; follows the original boundaries of the district of the same name, except Ōme): Fussa, Hamura, Akiruno, Hinohara, Hinode, Mizuho, Okutama Minami-Tama ("South Tama"; follows the boundaries of the former district of the same name): Tama, Inagi Kita-Tama dai-1 ("North Tama #1"; follows the boundaries of the former Kitatama district): Higashi-Murayama, Higashi-Yamato, Musashi-Murayama Kita-Tama dai-2 ("North Tama #2"): Kokubunji, Kunitachi Kita-Tama dai-3 ("North Tama #3"): Chōfu, Komae Kita-Tama dai-4 ("North Tama #4"): Kiyose, Higashi-Kurume Islands: Aogashima, Hachijō, Mikurajima, Miyake, Ogasawara, Kōzushima, Niijima, Ōshima, Toshima
Candidates On 13 June, the 295 candidates competing for one of the 127 seats, which have been distributed among 42 electoral districts, were announced. Compared to the previous election, the number of candidates increased by 24, and the number of female candidates increased from 74 to 99, breaking the previous record for the number of female candidacies.
Setagaya electoral district has the most announced candidates of any electoral district, with 18.
+Incumbents and candidatesPartyTotalIncumbentsPreviousrepresent-ativesNewLiberal Democratic Party4223217The Path to Rebirth 420042Tomin First3723113Japanese Communist Party241617Komeito221606Constitutional Democratic Party of Japan201217Democratic Party For the People180117 NHK Party9009Ishin6105Sanseito4004Tokyo Seikatsusha Network3111Reiwa Shinsengumi3003Conservative Party of Japan1001Social Democratic Party1001Genzei Nippon1Setagaya Electoral District001 Truth Party1Minato Electoral District001Conservative Party of NipponTetsunobu Ishihama's political group1Suginami Electoral District001 Health and Longevity Party1Meguro Electoral District001 Kumin First1Ota Electoral District001 Future of Nerima Party1Nerima Electoral District001 Constitutional Republican Party1Nishi Tamagawa Electoral District001 Impeach Supreme Court Judges Party1Shinagawa Electoral District001 Independents55161382951088179
Opinion polling Fieldwork date Polling firm Sample size LDP Tomin Komei JCP CDP Ishin Netto Reiwa DPFP DIY CPJ SDP Rebirth Ind. Others None/ LeadElection results47.59%16.819.7109.391.51.20.972.20.20.17.713.31−−2.9Asahi281576143−31042−251−−13Senkyo.com/JX4,53310.57.63.247.81.9 −3.37.43.7 − −2.1 −3.145.6 −2.9Kyodo News1,015161051111114634131−1761Yomiuri/NNN1,46320104472037311241 −3110Asahi281265143−51142−243−−14Senkyo.com/JX5,07711.84.33.13.67.62.2−4.38.23.51.50.40.9−−47.31.335.5Asahi311056154−51242−231−−16Yomiuri/NNN1,476187647314103−−233−29112021 prefectural election42.39%25.722.313.613.612.33.61.30.80.7−−−−5.11.1−−3.4
Results
Per electoral district +Winners and candidates by district and partyDistrictTurnoutNº of seatsTotal candidatesElected/Total candidatesEndorsementsTominLDPKomeiJCPCDPDPFPDIYIshinNettoReiwaOthersIndependentsChiyoda48.86%1730/10/10/10/21/2Chuo45.47%1511/10/10/2CDP,JCP,Net0/1Minato38.14%2711/10/1Net1/10/10/3Shinjuku45.92%4830/11/10/11/11/1Net1/10/2Bunkyo51.91%231/10/11/1Nerima47.24%2431/10/11/1Net0/1Sumida47.67%3511/11/11/10/10/1Koto49.13%480/11/10/10/1Net1/12/3Shinagawa48.92%41020/11/11/10/11/1Net,SDP0/10/21/2Meguro43.65%3921/11/11/1Net0/20/4Ota48.33%71611/11/10/21/11/1Net1/11/10/10/41/3CDPSetagaya49.70%8182/21/11/11/11/1Net1/21/10/10/10/40/3Shibuya42.41%251/10/11/1Net0/10/1Nakano49.07%3721/10/11/11/1Net,SDP0/10/2Suginami51.15%61751/11/11/11/11/11/10/10/10/10/60/2Toshima47.24%3511/10/11/11/10/1Kita51.53%3831/10/11/11/1社0/10/10/2Arakawa48.13%261/10/11/10/10/10/1Itabashi48.29%5101/11/21/11/11/1Net,SDP0/10.10/10/1Nerima50.65%71621/21/21/11/11/11/11/10/10/10/30/2Adachi 46.10%6111/11/22/21/11/1Net0/30/1Katsushika45.34%4851/11/11/10/10/1Net1/10/10/1Edogawa45.86%51021/11/11/10/11/10/10/21/2Hachioji49.03%51111/11/21/10/11/1Net0/10/11/3DPFPTachikawa43.52%2411/10/11/1Net,SDP0/1Musashino50.02%140/10/10/11/1CDP,NetMiura48.51%2411/10/11/1Net,SDP0/1Ōme40.95%1311/10/10/1Fuchū46.37%2521/10/10/11/2TominAkishima44.33%1411/10/10/10/1Machida48.20%4811/11/11/10/11/1Net,SDP0/10/2Koganei45.29%1410/10/10/11/1CDP,JCP,Net,SDPKodaira45.82%2421/10/11/1Net,SDP0/1Hino46.66%2521/10/11/10/10/1Nishi Tokyo44.94%240/10/10/11/1CDP,NetNishi-Tama38.46%251/11/10/3Minami-Tama49.42%2511/10/10/11/2CDPKita Tama 145.65%351/10/11/11/10/1Kita Tama 251.70%2511/10/11/1CDP,SDP0/10/1Kita Tama 350.44%351/10/11/11/10/1Kita Tama 446.17%2411/11/10/10/1Islands58.17%1311/10/10/1DistrictTurnoutNº of seatsTotal candidatesTominLDPKomeiJCPCDPDPFPDIYIshinNettoReiwaOthersIndependentsTotal47.59%1272712431/3721/4519/2214/2417/209/183/40/61/30/312/55Source：
Aftermath Following the election, 5 independents joined the CDP caucus, making it the second-largest party in the Assembly, only behind Tomin First and ahead of the LDP.https://www.yomiuri.co.jp/local/tokyo23/news/20250717-OYTNT50165/
Notes
References
External links https://r7togisen.metro.tokyo.lg.jp/