Japanese Prime Minister Shigeru Ishiba Resigns

Japanese Prime Minister Shigeru Ishiba announced on Sept. 7 that he is stepping down following two election losses.

Ishiba first took office in October 2024. For weeks, he has rejected calls for his resignation from conservative members of his own party, suggesting that doing so would leave a political vacuum in Japan while it faces critical challenges at home and abroad.

The prime minister announced his resignation one day before his Liberal Democratic Party was poised to decide on potentially holding an early leadership election. If approved, this would have amounted to a virtual no-confidence motion against Ishiba.

During a news conference, the prime minister said he would initiate the process of holding a party leadership vote to determine his replacement and that a Sept. 8 decision was unnecessary.

Ishiba would have faced numerous obstacles managing a divided party and minority government had he remained prime minister.

In July’s critical parliamentary election, Ishiba’s ruling coalition was unsuccessful in securing a majority in the 248-seat upper house, another test for the stability of the prime minister’s administration. The party-led coalition had already lost a majority during an earlier election defeat in the lower house.

Ishiba made his decision following a Sept. 6 meeting with Agriculture Minister Shinjiro Koizumi and his mentor, former Prime Minister Yoshihide Suga.

Previously, Ishiba had insisted on staying in office, stressing that Japan should avoid a political vacuum as it faces significant challenges, including U.S. tariffs, inflation, reforms for rice policy, and increasing tensions in the region.

The Liberal Democratic Party’s review of its election loss called for a “complete overhaul” of the party, resulting in requests for an early leadership vote or for Ishiba to resign before the Sept. 8 results gained momentum.

The conservative Taro Aso, who has opposed Ishiba, requested an early vote alongside a minister and multiple deputy ministers in the Ishiba Cabinet, prompting others to do the same.

Earlier on Sept. 7, former Health Minister Norihisa Tamura told a talk show host on Japan’s NHK public television that the best way to prevent the party’s division and move forward would be for the prime minister “to settle” the disagreements before the Sept. 8 vote. Tamura urged Ishiba to resign.

Tamura said the party has already faced distractions from critical work on economic policies and on strategies to build opposition support in the next parliamentary election.

Ishiba’s resignation means that the Liberal Democratic Party is now expected to schedule a date for its party presidential election. It will likely be held in early October.

Among the potential candidates are Koizumi, conservative former Economic Security Minister Sanae Takaichi, and moderate Chief Cabinet Secretary Yoshimasa Hayashi, a protégé of former Prime Minister Fumio Kishida.

With no majority in either house, the new Liberal Democratic Party leader must work with the main opposition parties to pass bills, or risk constant no-confidence motions, according to experts.

However, the opposition parties are currently too fractured to form a coalition big enough to effectively oppose the government.

Ishiba recently succeeded in getting U.S. President Donald Trump to reduce the tariff rates imposed on Japan, dropping them from 25 percent to 15 percent. The prime minister also said he directed his chief trade negotiator, Ryosei Akazawa, to deliver a letter to Trump that describes his desire to work with the U.S. president to establish “the golden era” of the U.S.–Japan alliance.

He also extended an invitation to Trump to visit Japan.

Liberal Democratic Party Secretary-General Hiroshi Moriyama, a top aide to Ishiba who has been critical in negotiating with opposition leaders to secure legislation since the prime minister took office, had said he would also resign following the election loss. However, Ishiba has not granted his resignation, which would have been a setback to the prime minister.