Key Facts
• July 21, 2025: Ruling coalition (Liberal Democratic Party and Komeito) faces significant seat losses.
• Exit poll: 27.4% of Liberal Democratic Party voters do not support Prime Minister Shigeru Ishiba.
• 66.7% of regular Liberal Democratic Party supporters voted for the party; 33.3% shifted to others.
• Top alternative parties for former Liberal Democratic Party voters: Sanseito (6.2%) and Democratic Party for the People (5.2%).
• Among unaffiliated voters, 12.6% supported the Liberal Democratic Party, while 15.2% chose Sanseito and 14.8% backed the Democratic Party for the People.
• Younger voters (10s–20s) favored the Democratic Party for the People, while Sanseito led among voters in their 30s–40s.
• Liberal Democratic Party retained support from older generations (50s–70s+), but struggled with younger demographics.
• Analysts attribute Sanseito and Democratic Party for the People’s success to effective smartphone-based outreach.
• Calls for leadership change within the Liberal Democratic Party emerge following the election results.
Summary
The July 2025 Upper House election marked a significant setback for Japan’s ruling coalition, with the Liberal Democratic Party and Komeito losing substantial seats. Exit polls revealed dissatisfaction with Prime Minister Shigeru Ishiba, as 27.4% of Liberal Democratic Party voters expressed disapproval. Notably, 33.3% of regular Liberal Democratic Party supporters shifted their votes to other parties, primarily Sanseito (6.2%) and the Democratic Party for the People (5.2%).
Unaffiliated voters also leaned toward these emerging parties, with Sanseito securing 15.2% and the Democratic Party for the People 14.8%, compared to the Liberal Democratic Party’s 12.6%. Younger voters favored these newer parties, while the Liberal Democratic Party maintained support among older generations. Analysts credit the success of Sanseito and the Democratic Party for the People to their adept use of smartphone-based campaigning, appealing to younger demographics. The election results have sparked internal calls for leadership changes within the Liberal Democratic Party, raising questions about the future of Prime Minister Ishiba’s administration.
