Key Facts
• July 20, 2025: Upper House election to determine the ‘Third Pole’ leader.
• Ishin and Democratic Party for the People (DPP) compete for unaffiliated and working-age voters.
• October 2024: Seiji Maehara left DPP and joined Ishin, deepening tensions.
• 2024 Lower House election: Ishin lost seats, while DPP gained momentum.
• Ishin focuses on social insurance reform; DPP prioritizes raising the income tax threshold to ¥1.78 million.
• Both parties share policies on constitutional reform and realistic security measures.
• Sanseito emerges as a strong competitor, targeting foreign policy issues.
• Tokyo and Osaka constituencies see fierce competition among Ishin, DPP, and Sanseito.
• July 10-11, 2025: Leaders Tamaki and Yoshimura hold rallies in Tokyo, emphasizing support for younger generations.
• Ruling coalition exploits Ishin-DPP discord during budget negotiations, intensifying mistrust.
Summary
The upcoming Upper House election on July 20, 2025, marks a critical battle between Ishin and the Democratic Party for the People (DPP) for dominance as the ‘Third Pole’ in Japanese politics. Both parties, which once explored collaboration, now face deepening tensions following Seiji Maehara’s defection from DPP to Ishin in 2024 and diverging strategies in the 2024 Lower House election. Ishin emphasizes social insurance reform, while DPP focuses on raising the income tax threshold to ¥1.78 million, both targeting working-age voters. Meanwhile, Sanseito’s rapid rise, particularly in Tokyo and Osaka constituencies, adds pressure on both parties. The ruling coalition has further fueled mistrust between Ishin and DPP by leveraging their policy differences during budget negotiations. As the election nears, leaders Tamaki and Yoshimura rally support, highlighting their commitment to younger generations. The race for the ‘Third Pole’ intensifies, with Sanseito’s growing influence reshaping the political landscape.
