LDP Leadership Race Intensifies: Koizumi and Hayashi Compete

By Global Leaders Insights Team | Sep 16, 2025

Japan’s Liberal Democratic Party (LDP) is all set to choose a new leader on October 4, after Prime Minister Shigeru Ishiba called it quits on September 7. The party’s recent election losses, fueled by public frustration over rising prices, have shaken things up, and the winner of this race is likely to become Japan’s next prime minister.

It’s a crowded field, with heavyweights like Shinjiro Koizumi and Yoshimasa Hayashi stepping up, alongside others like Sanae Takaichi and Toshimitsu Motegi.

Shinjiro Koizumi, the 44-year-old Agriculture Minister, is a name to watch. He’s the son of former Prime Minister Junichiro Koizumi and has a knack for connecting with people. He’s been vocal about tackling issues like crazy-high rice prices and made a strong showing in the LDP’s 2024 leadership contest, coming in third. If he pulls this off, he could be one of Japan’s youngest prime ministers ever.

  • Japan’s LDP leadership race heats up with Koizumi, Hayashi contenders
  • Shinjiro Koizumi, Yoshimasa Hayashi vie to become Japan’s next PM
  • LDP candidates tackle inflation, economy as October 4 vote nears

Then there’s Yoshimasa Hayashi, the Chief Cabinet Secretary, who’s also jumping in. With his years of experience in foreign affairs and tight connections to top leaders, he’s a solid contender.

Sanae Takaichi, a seasoned conservative with bold right-wing views, is another big player. A Nikkei poll last month gave her a slight edge over Koizumi, with 23% support to his 22%. If she wins, she’d make history as Japan’s first female prime minister. Toshimitsu Motegi, a former foreign minister known as the “Trump Whisperer,” is also in the mix, urging the party to come together during what he calls the LDP’s toughest challenge yet.

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After losing their parliamentary majority in the last election, the LDP is under pressure to address voter gripes about soaring costs and a tough economy. The markets are feeling the heat too, with the yen slipping and bond yields creeping up over worries about big spending plans from candidates like Takaichi. The LDP’s vote, which includes both lawmakers and everyday party members, will decide who gets to tackle Japan’s big issues—like inflation, a shrinking population, and a hefty national debt.