Assembly President
parliamentary
Election name2025 Tokyo prefectural election
CountryTokyo
Previous election2021 Tokyo prefectural election
Previous year2021
Next election2029 Tokyo prefectural election
Next year2029
Election date22 June 2025
Turnout47.59% (5.20 pp)
Before electionHiroki Masuko
Before partyTomin First no Kai
After electionHiroki Masuko
After partyTomin First no Kai
Seats for electionAll 127 members in the Tokyo Metropolitan Assembly
Majority seats64
Leader 1Takayuki Morimura
Party 1Tomin First no Kai
Last election 131 seats, 22.28%
Seats before 126
Seats 131
Seat change 1'
Popular vote 11,043,563
Percentage 119.74%
Swing 12.54 pp
Leader 2Shinji Inoue
Party 2Liberal Democratic Party (Japan)
Last election 233 seats, 25.69%
Seats before 230
Seats 221
Seat change 212
Popular vote 2887,317
Percentage 216.79%
Swing 28.90 pp
Leader 3Mitsunari Okamoto
Party 3Komeito
Last election 323 seats, 13.58%
Seats before 323
Seats 319
Seat change 34
Popular vote 3530,217
Percentage 310.03%
Swing 33.55 pp
Leader 4Akira Nagatsuma
Party 4Constitutional Democratic Party of Japan
Last election 415 seats, 12.34%
Seats before 412
Seats 417
Seat change 42
Popular vote 4476,579
Percentage 49.02%
Swing 43.32 pp
Leader 5Yoshihiko Tanabe
Party 5Japanese Communist Party
Last election 519 seats, 13.57%
Seats before 519
Seats 514
Seat change 55
Popular vote 5489,084
Percentage 59.25%
Swing 54.32 pp
Leader 6Tetsuji Isozaki
Party 6Democratic Party For the People
Last election 60 seats, 0.67%
Seats before 60
Seats 69
Seat change 69
Popular vote 6367,334
Percentage 66.95%
Swing 66.28 pp
Leader 7Sohei Kamiya
Party 7Sanseitō
Last election 7Did not contest
Seats before 70
Seats 73
Seat change 73
Popular vote 7117,389
Percentage 72.22%
Swing 7New
Leader 8Yasuyo Iwanaga
Party 8Tokyo Seikatsusha Network
Last election 81 seats, 1.25%

2025 Tokyo prefectural election (令和7年/2025年東京都議会議員選挙, Reiwa 7-nen/2025-nen Tōkyōto gikai giin senkyo) 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.[1] After this information was disclosed, the LDP group in the assembly decided to dissolve its political organisation, excepting the assembly group.[2]
  • 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.[3]
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.[4]

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.[5]
  • The JCP announced its aim to secure their current 19 seats in the assembly and increase them.[6]
Others
  • On 15 January, Shinji Ishimaru, who came second in the 2024 gubernatorial election, announced the foundation of a new party called The Path to Rebirth (再生の道, Saisei no michi), for which he is fielding candidates in every electoral district.[7]

Assembly composition before the election

Groups[8]PartiesSeatsTotal
Tokyo Liberal Democratic Party GroupLiberal Democratic Party2930
Independent1
Tomin First GroupTomin First2526
Democratic Party For the People1
Japanese Communist Party GroupJapanese Communist Party1919
Komeito GroupKomeito2323
Constitutional Democratic Party of Japan GroupConstitutional Democratic Party of Japan1212
Mirai GroupIndependents34
Constitutional Democratic Party of Japan1
 Group to Protect FreedomIndependents22
Not affiliatedIndependents47
Nippon Ishin1
Tokyo Seikatsusha Network1
Greens Japan1
Vacant33

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:[9]

Candidates

On 13 June, the 295 candidates competing for one of the 127 seats, which have been distributed among 42 electoral districts, were announced.[10] 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 candidates
PartyTotalIncumbentsPrevious
represent-
atives
New
Liberal Democratic Party4223217
The Path to Rebirth420042
Tomin First3723113
Japanese Communist Party241617
Komeito221606
Constitutional Democratic Party of Japan201217
Democratic Party For the People180117
 NHK Party9009
Ishin6105
Sanseito4004
Tokyo Seikatsusha Network3111
Reiwa Shinsengumi3003
Conservative Party of Japan1001
Social Democratic Party1001
Genzei Nippon1[11]001
 Truth Party1[12]001
Conservative Party of Nippon[13]1[14]001
 Health and Longevity Party1[15]001
 Kumin First1[16]001
 Future of Nerima Party1[17]001
 Constitutional Republican Party1[18]001
 Impeach Supreme Court Judges Party1[19]001
 Independents5516138
2951088179

Opinion polling

Fieldwork datePolling firmSample sizeLDPTominKomeiJCPCDPIshinNettoReiwaDPFPDIYCPJSDPRebirthInd.OthersNone/Und.No ans.Lead
Election results47.59%[a]16.819.7109.391.51.20.972.20.20.17.713.31−−2.9
Asahi[20]281576143−31042−251−−13
Senkyo.com/JX[21]4,53310.57.63.247.81.9−3.37.43.7−−2.1−3.145.6−style="background: |2.9
Kyodo News[22]1,015161051111114634131−176style="background: |1
Yomiuri/NNN[23][24]1,46320104472037311241−31style="background: |10
Asahi[25]281265143−51142−243−−14
Senkyo.com/JX[26]5,07711.84.33.13.67.62.2−4.38.23.51.50.40.9−−47.31.3style="background: |35.5
Asahi[25]311056154−51242−231−−16
Yomiuri/NNN[27][28]1,476187647314103−−233−29style="background: |11
2021 prefectural election42.39%[a]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 party
DistrictTurnoutNº of seatsTotal candidatesElected/Total candidatesEndorsements
TominLDPKomeiJCPCDPDPFPDIYIshinNettoReiwaOthersIndependents
Chiyoda48.86%1730/10/10/10/21/2
Chuo45.47%1511/10/10/2CDP,JCP,Net0/1
Minato38.14%2711/10/1Net1/10/10/3
Shinjuku45.92%4830/11/10/11/11/1Net1/10/2
Bunkyo51.91%231/10/11/1
Nerima47.24%2431/10/11/1Net0/1
Sumida47.67%3511/11/11/10/10/1
Koto49.13%480/11/10/10/1Net1/12/3
Shinagawa48.92%41020/11/11/10/11/1Net,SDP0/10/21/2
Meguro43.65%3921/11/11/1Net0/20/4
Ota48.33%71611/11/10/21/11/1Net1/11/10/10/41/3CDP
Setagaya49.70%8182/21/11/11/11/1Net1/21/10/10/10/40/3
Shibuya42.41%251/10/11/1Net0/10/1
Nakano49.07%3721/10/11/11/1Net,SDP0/10/2
Suginami51.15%61751/11/11/11/11/11/10/10/10/10/60/2
Toshima47.24%3511/10/11/11/10/1
Kita51.53%3831/10/11/11/1社0/10/10/2
Arakawa48.13%261/10/11/10/10/10/1
Itabashi48.29%5101/11/21/11/11/1Net,SDP0/10.10/10/1
Nerima50.65%71621/21/21/11/11/11/11/10/10/10/30/2
Adachi46.10%6111/11/22/21/11/1Net0/30/1
Katsushika45.34%4851/11/11/10/10/1Net1/10/10/1
Edogawa45.86%51021/11/11/10/11/10/10/21/2
Hachioji49.03%51111/11/21/10/11/1Net0/10/11/3DPFP
Tachikawa43.52%2411/10/11/1Net,SDP0/1
Musashino50.02%140/10/10/11/1CDP,Net
Miura48.51%2411/10/11/1Net,SDP0/1
Ōme40.95%1311/10/10/1
Fuchū46.37%2521/10/10/11/2Tomin
Akishima44.33%1411/10/10/10/1
Machida48.20%4811/11/11/10/11/1Net,SDP0/10/2
Koganei45.29%1410/10/10/11/1CDP,JCP,Net,SDP
Kodaira45.82%2421/10/11/1Net,SDP0/1
Hino46.66%2521/10/11/10/10/1
Nishi Tokyo44.94%240/10/10/11/1CDP,Net
Nishi-Tama38.46%251/11/10/3
Minami-Tama49.42%2511/10/10/11/2CDP
Kita Tama 145.65%351/10/11/11/10/1
Kita Tama 251.70%2511/10/11/1CDP,SDP0/10/1
Kita Tama 350.44%351/10/11/11/10/1
Kita Tama 446.17%2411/11/10/10/1
Islands58.17%1311/10/10/1
DistrictTurnoutNº of seatsTotal candidatesTominLDPKomeiJCPCDPDPFPDIYIshinNettoReiwaOthersIndependents
Total47.59%1272712431/3721/4519/2214/2417/209/183/40/61/30/312/55
Source:[29]

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.[30]

Notes

  1. ^ Election turnout.

References

  1. ^ 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
  2. ^ 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
  3. ^ 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
  4. ^ 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
  5. ^ [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
  6. ^ 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
  7. ^ 【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
  8. ^ "会派構成・会派略称一覧 | 東京都議会". www.gikai.metro.tokyo.lg.jp. Retrieved 2025-06-17.
  9. ^ "選挙区地図 | 東京都議会". www.gikai.metro.tokyo.lg.jp. Retrieved 2025-06-19.
  10. ^ "都議選告示、立候補の届け出は295人に...過去最多". 読売新聞. 2025-06-13. Retrieved 2025-06-13.
  11. ^ Setagaya Electoral District
  12. ^ Minato Electoral District
  13. ^ Tetsunobu Ishihama's political group
  14. ^ Suginami Electoral District
  15. ^ Meguro Electoral District
  16. ^ Ota Electoral District
  17. ^ Nerima Electoral District
  18. ^ Nishi Tamagawa Electoral District
  19. ^ Shinagawa Electoral District
  20. ^ "ja:都議選投票先 自民最多維持、都民ファ増、国民微減 朝日ネット調査:朝日新聞" [Tokyo Metropolitan Election Vote: LDP maintains lead, Tomin-Fa increases, Kokumin-Fa slightly down - Asahi Net Survey] (in Japanese). The Asahi Shimbun. 2025-06-19. Retrieved 2025-06-19.
  21. ^ "ja:都議選告示後初の情勢調査で都民ファが支持伸ばし、自民は微減!今後のカギを握るのは約半数の「投票先未定」層【東京都議会議員選挙2025】" [In the first opinion poll since the announcement of the Tokyo Metropolitan Assembly election, Tomin Fa's support has increased, while the LDP's has slightly decreased! The key to the future lies in the roughly half of the "undecided voter" group [Tokyo Metropolitan Assembly Election 2025]] (in Japanese). Senkyo.com. 2025-06-19. Retrieved 2025-06-19.
  22. ^ "ja:都議選、自民が第1党うかがう 立民、共産、都ファと混戦模様" [Tokyo Metropolitan Assembly election: LDP aims to be number one party; race in the wings with CDP, Communist Party, and To-Fa] (in Japanese). Kyodo News. 2025-06-15. Retrieved 2025-06-15.
  23. ^ "ja:都議選の情勢調査の結果と質問項目" [Survey results and questions on the metropolitan assembly election] (in Japanese). Yomiuri Shimbun. 2025-06-16. Retrieved 2025-06-19.
  24. ^ "ja:【都議選2025】投票先は? 自民横ばい 国民民主が下落 都ファ上昇で2位に 日テレ・読売新聞世論調査" [[Tokyo Metropolitan Assembly Election 2025] Who will you vote for? LDP remains stable, Democratic Party for the People drops, Tokyo Party rises to second place - NTV/Yomiuri Shimbun opinion poll] (in Japanese). Nippon News Network. 2025-06-15. Retrieved 2025-06-22.
  25. ^ "ja:都議選投票先 自民28%、立憲14%、国民11% 朝日新聞調査" [Tokyo Metropolitan Assembly election voters: LDP 28%, Constitutional Democratic Party 14%, Citizens 11% - Asahi Shimbun survey] (in Japanese). The Asahi Shimbun. 2025-06-14. Retrieved 2025-06-22.
  26. ^ "ja:【都議選2025情勢調査】投票先調査でアノ政党が躍進!?世代別で支持が二極化の傾向" [[2025 Tokyo Metropolitan Election Situation Survey] A certain political party makes a big leap in the voting survey!? Support is polarized by generation] (in Japanese). Senkyo.com. 2025-06-12. Retrieved 2025-06-12.
  27. ^ "ja:東京都議選挙の投票先「自民」低調18%、国民民主10%...読売情勢調査" [Tokyo Metropolitan Assembly election: LDP voters sluggish at 18%, Democratic Party for the People at 10%...Yomiuri poll] (in Japanese). Yomiuri Shimbun. 2025-05-18. Retrieved 2025-05-18.
  28. ^ "ja:都議選投票先 自民党18% 国民民主10%【NNN・読売新聞 世論調査】" [Tokyo Metropolitan Election Vote: LDP 18%, Democratic Party for the People 10% [NNN/Yomiuri Shimbun Opinion Poll]] (in Japanese). Nippon News Network. 2025-05-18. Retrieved 2025-05-18.
  29. ^ "都議選2025 候補者一覧 選挙速報・開票結果". 読売新聞. 2025-06-22. Retrieved 2025-06-22.
  30. ^ https://www.yomiuri.co.jp/local/tokyo23/news/20250717-OYTNT50165/