One day after securing a dramatic runoff victory in the ruling Liberal Democratic Party (LDP) presidential election, incoming Japanese Prime Minister Shigeru Ishiba moved swiftly on Saturday to assemble his party executive leadership and Cabinet lineup at LDP headquarters in Tokyo. With an extraordinary session of the National Diet scheduled for Tuesday, October 1, to formally elect the 67-year-old former defense minister as Japan's 102nd prime minister, Ishiba focused on bridging internal party divisions and preparing the ruling coalition for a potential autumn snap general election.

To anchor party governance and legislative negotiations, Ishiba selected 79-year-old veteran lawmaker Hiroshi Moriyama—currently chairman of the LDP General Council—to serve as LDP Secretary-General, the party's second-most powerful post. Former Prime Minister Yoshihide Suga, who backed Ishiba during Friday's runoff vote, was tapped to serve as LDP Vice President, while former Defense Minister Itsunori Onodera was chosen to chair the influential Policy Research Council and Shinjiro Koizumi was slated to head the party's Election Strategy Committee.

Key Ministerial Appointments for Finance, Defense, and Diplomacy

In shaping his incoming Cabinet, Ishiba prioritized veteran administrative experience across economic and national security portfolios. Former Chief Cabinet Secretary and health minister Katsunobu Kato, who also competed in Friday's leadership race, is set to be appointed Minister of Finance, tasked with steering fiscal consolidation while funding household inflation relief and regional revitalization programs. Incumbent Chief Cabinet Secretary Yoshimasa Hayashi will be retained as the government's top spokesperson and inter-ministerial coordinator to ensure administrative continuity.

Reflecting Ishiba's longstanding focus on defense policy and regional deterrence, former Defense Minister Gen Nakatani was tapped to return to the Ministry of Defense, while Takeshi Iwaya, a close ally who managed Ishiba's leadership campaign and previously led the defense portfolio, is expected to be named Minister for Foreign Affairs. Former Trade Minister Yoji Muto is slated to head the Ministry of Economy, Trade and Industry (METI).

“To carry out bold reforms and revitalize regional Japan, our new administration must unify the party and seek a fresh, transparent mandate from the Japanese people as soon as possible.”

Focus on Political Reform, Regional Revitalization, and Early Dissolution

Noticeably absent from the top party and Cabinet posts thus far is Economic Security Minister Sanae Takaichi, whom Ishiba defeated 215 to 194 in Friday's runoff after trailing her in the first round. According to party officials, Takaichi declined an offer to chair the LDP General Council, underscoring the delicate balancing act Ishiba faces in maintaining party unity with conservative lawmakers while distancing his administration from the political funds scandal that prompted outgoing Prime Minister Fumio Kishida to step down.

Speaking alongside coalition partner Komeito's new leader Keiichi Ishii on Saturday, Ishiba indicated that after delivering his policy speech in the Diet and engaging in representative questioning with opposition leaders, he intends to dissolve the House of Representatives for a snap general election as early as late October. Economic priorities for the incoming Cabinet include sustaining real wage growth above inflation, accelerating rural demographic revitalization, and strengthening disaster-response infrastructure through a dedicated government agency.

Sources