Key Facts
• June 22, 2025: Tokyo Metropolitan Assembly election held.
• Liberal Democratic Party (LDP) reduced to 21 seats, losing 9 seats.
• Tomin First Party secured 31 seats, reclaiming majority status.
• LDP’s 21 seats mark its lowest ever, below 2017’s 23 seats.
• Komeito Party won 19 seats, failing to achieve full re-election for the first time in 9 terms.
• Constitutional Democratic Party increased to 17 seats; Japanese Communist Party dropped to 14 seats.
• Tokyo Seikatsusha Network maintained 1 seat.
• Democratic Party for the People (9 seats) and Sanseito (3 seats) gained their first assembly representation.
• No seats were won by Japan Innovation Party, Saisei no Michi, Reiwa Shinsengumi, Social Democratic Party, or Japan Conservative Party.
• Voter turnout was 47.59%, a 5.2-point increase from the previous election.
Summary
The Tokyo Metropolitan Assembly election on June 22, 2025, resulted in a historic defeat for the Liberal Democratic Party (LDP), which lost 9 seats, reducing its total to 21-the lowest in its history. The Tomin First Party regained its majority with 31 seats. Komeito Party secured 19 seats, failing to achieve full re-election for the first time in nine terms. The Constitutional Democratic Party increased its seats to 17, while the Japanese Communist Party dropped to 14. Newcomers Democratic Party for the People and Sanseito gained their first assembly representation with 9 and 3 seats, respectively. Other parties, including the Japan Innovation Party and Reiwa Shinsengumi, failed to win any seats. Voter turnout rose to 47.59%, a 5.2-point increase from the previous election.
