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Ahead of Saturday Vote, LDP Contest Pits Takaichi’s Big-Spend Plan Against Koizumi’s Tax Relief

The outcome could steer Japan toward heavier state spending or cautious tax relief, a choice investors are already pricing.

Overview

  • Liberal Democratic Party members and lawmakers vote Saturday to choose the party president, a decision that typically determines the next prime minister even though the LDP has lost working majorities.
  • Surveys reported by Japanese media indicate Shinjiro Koizumi leads among the 295 LDP lawmakers while Sanae Takaichi is ahead among rank‑and‑file members, setting up a possible runoff with shifting dynamics.
  • Takaichi has outlined a 'crisis management investment' program with proactive state financing for sectors such as energy, food security, semiconductors, AI, biotechnology, advanced medicine and defense, and she has pledged aggressive fiscal measures.
  • Koizumi and some rivals favor tax cuts to ease living costs and greater fiscal restraint, and analysts say a Koizumi or Yoshimasa Hayashi win is less likely to unsettle the Bank of Japan’s policy path.
  • Markets are bracing for the result, with analysts warning a Takaichi victory could steepen the JGB yield curve and weaken the yen, while a Koizumi outcome may prompt a muted reaction; the incoming leader is also expected to host President Donald Trump later in October and face questions over a reported U.S. investment‑trade deal Takaichi has suggested could be revisited if unfair.