Japan's Democratic Party for the People decided on October 28 to support the Liberal Democratic Party's plan to remove 31 proportional-representation seats from the House of Representatives, cutting the chamber from 465 seats to 434.
Japan's Democratic Party for the People decided on October 28, 2026 to support the Liberal Democratic Party's proposal to remove 31 proportional-representation seats from the House of Representatives, reducing the chamber from 465 seats to 434.
The DPP had sought a 19-seat cut. The compromise followed the LDP's addition on October 27 of shared proportional lists for multiple parties and a merger of the Chugoku and Shikoku proportional blocks.
Because every removed seat comes from proportional representation, the single-member district seats are untouched by the plan; the reduction falls entirely on the proportional tier.
The DPP's decision was reported by more than one outlet on October 28. Where reports differed on another party's position, this article states nothing about that position rather than picking one account.
No vote date was given in the reports of the decision. The compromise elements that won the DPP's backing, the shared lists and the merged Chugoku-Shikoku block, are now the shape of the proposal going forward.