Key Facts
• JNN poll asked who is most suitable as the next Prime Minister.
• 1st: Shinjiro Koizumi (20.4%), 2nd: Sanae Takaichi (16.7%), 3rd: Shigeru Ishiba (11.1%).
• 4th: Taro Kono (5.2%), 5th: Yuichiro Tamaki (4.4%), 6th: Yoshihiko Noda (3.8%).
• 7th: Yoshimasa Hayashi (3.4%), 8th: Yoko Kamikawa (2.3%), 9th: Takayuki Kobayashi (1.7%).
• 10th: Toshimitsu Motegi (1.1%), 11th: Katsunobu Kato (0.8%), 12th: Seiji Maehara (0.5%).
• “Other politicians” accounted for 18.1% of responses.
• Survey conducted on August 2-3, 2025, targeting 2,531 people aged 18+.
• Valid responses: 1,003 (39.6%), including 498 via landline and 505 via mobile.
• JNN used the RDD method, combining random landline and mobile calls.
• Internet surveys were avoided to reduce bias and ensure representative results.
Summary
A recent JNN poll revealed Shinjiro Koizumi as the top choice for Japan’s next Prime Minister, securing 20.4% of support. Sanae Takaichi followed with 16.7%, and Shigeru Ishiba ranked third with 11.1%. The survey, conducted on August 2-3, 2025, included 2,531 participants aged 18 and older, with 1,003 valid responses collected via the RDD method. This approach ensured a representative sample by combining random landline and mobile calls. The poll also highlighted other candidates, including Taro Kono (5.2%) and Yuichiro Tamaki (4.4%), while “other politicians” accounted for 18.1% of responses. JNN emphasized the reliability of telephone surveys over internet-based methods to minimize bias and better reflect voter demographics.
