Key Facts
• September 7, 2025: Prime Minister Shigeru Ishiba announces resignation after 49 days of resistance.
• July 20, 2025: Liberal Democratic Party (LDP) suffers major defeat in House of Councillors election.
• October 2024: LDP loses majority in House of Representatives election under Ishiba’s leadership.
• Ishiba faced internal pressure, with a “recall” movement gaining traction within the LDP.
• Koizumi Shinjiro, Minister of Agriculture, emerges as a leading candidate for Ishiba’s successor.
• LDP governance code emphasizes leadership accountability following election losses.
• Ishiba’s prolonged resistance contrasts with LDP’s tradition of swift resignations after defeats.
• Public support for Ishiba initially increased, with demonstrations and rising approval ratings.
• September 2025: Key LDP executives, including Secretary-General Hiroshi Moriyama, resign, further isolating Ishiba.
• Successor candidates include Koizumi Shinjiro, Sanae Takaichi, Yoshimasa Hayashi, and Toshimitsu Motegi.
Summary
Prime Minister Shigeru Ishiba announced his resignation on September 7, 2025, following 49 days of resistance after the Liberal Democratic Party’s (LDP) significant losses in two consecutive national elections. Despite initial public support and rising approval ratings, Ishiba faced mounting internal pressure, including a “recall” movement within the LDP. His prolonged tenure defied the party’s tradition of swift resignations after electoral defeats. Koizumi Shinjiro, the Minister of Agriculture, is seen as the leading candidate to succeed Ishiba, with other contenders including Sanae Takaichi, Yoshimasa Hayashi, and Toshimitsu Motegi. The LDP’s governance code underscores leadership accountability, emphasizing the need for stability and swift political restructuring. Ishiba’s departure marks a critical juncture for the LDP as it seeks to rebuild under new leadership.
