JAPAN, 03 October 2025 – Japan could be on the brink of a historic political shift as the ruling Liberal Democratic Party (LDP) votes on Saturday to choose its next leader, a decision that may deliver the country’s first female prime minister or its youngest leader in modern history.
The leading contenders are Sanae Takaichi, a 64-year-old conservative nationalist allied with the late former Prime Minister Shinzo Abe, and Shinjiro Koizumi, a 44-year-old farm minister and son of ex-premier Junichiro Koizumi. Opinion polls also show Cabinet Secretary Yoshimasa Hayashi, 64, as a possible challenger.
The leadership race comes as Prime Minister Shigeru Ishiba steps down following repeated electoral defeats. Although the winner of the LDP contest is widely expected to become prime minister given the party’s dominance, the outcome is not guaranteed, the LDP has lost its majorities in both houses of parliament under Ishiba’s tenure.
A Party at a Crossroads
The election reflects deep divisions within the LDP, which has ruled Japan for most of the postwar period but now faces growing voter dissatisfaction. Many disillusioned younger voters are turning to opposition parties, including a rising far-right, anti-immigrant group.
“Koizumi and Takaichi offer two quite different approaches to that renewal,” said Tina Burrett, political science professor at Tokyo’s Sophia University. “Koizumi is seen as someone who could forge consensus with other parties while Takaichi would shake up a world of rather grey politicians.”
Competing Economic Visions
Takaichi has promised to double the size of Japan’s economy within a decade through massive state investment in technologies, infrastructure, food production, and other sectors tied to national security. Her approach, described as the most expansionist economic platform among LDP candidates, includes the possibility of renegotiating Japan’s $550 billion investment agreement with U.S. President Donald Trump, which secured lower tariffs on Japanese automobiles and other products.
“That deal may need to be redone if it proves unfair,” she has said.
By contrast, Koizumi while pledging tax cuts to ease household burdens has leaned toward more cautious economic management in line with Ishiba’s restraint. Hayashi, along with Koizumi, has defended the Trump trade deal.
The Vote Dynamics
The election’s outcome could hinge on whether it proceeds to a second round. A report by the Asahi newspaper said Koizumi currently leads among the LDP’s 295 lawmakers, followed by Hayashi and then Takaichi. However, a Nippon Television survey suggested Takaichi holds the edge among grassroots party members, who control an equal share of votes in the first round.
If the race goes to a runoff, grassroots influence would shrink to just 47 votes, potentially shifting the balance back toward the lawmakers’ favorites.
If elected, Koizumi would be only slightly older than Hirobumi Ito, who became Japan’s first prime minister in 1885 under the prewar constitution, making him the country’s youngest modern leader.
What Comes Next
Whoever wins, one of their first tasks will be to host President Trump in Tokyo at the end of October, Reuters has reported. Domestically, the new leader will face the challenge of reconnecting the LDP with disillusioned voters.
“There’s every possibility that we’ll be returning to this issue of yet another election for the leadership of the country before too long,” said James Brown, politics professor at Temple University in Tokyo.
