2025 Tokyo prefectural election (Japanese: 令和7年/2025年東京都議会議員選挙, Hepburn: Reiwa 7-nen/2025-nen Tōkyō togikai 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]
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]
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.
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]
^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]. The Asahi Shimbun (in Japanese). 19 June 2025. Retrieved 19 June 2025.
^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]]. Senkyo.com (in Japanese). 19 June 2025. Retrieved 19 June 2025.
^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]. Kyodo News (in Japanese). 15 June 2025. Retrieved 15 June 2025.
^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]. Yomiuri Shimbun (in Japanese). 16 June 2025. Retrieved 19 June 2025.
^【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]. Nippon News Network (in Japanese). 15 June 2025. Retrieved 22 June 2025.
^ ab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]. The Asahi Shimbun (in Japanese). 14 June 2025. Retrieved 22 June 2025.
^【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]. Senkyo.com (in Japanese). 12 June 2025. Retrieved 12 June 2025.
^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]. Yomiuri Shimbun (in Japanese). 18 May 2025. Retrieved 18 May 2025.
^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]]. Nippon News Network (in Japanese). 18 May 2025. Retrieved 18 May 2025.
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