Overview
- The Second Petty Bench, led by Chief Judge Ojima Akira, set the judgment date and did not refer the case to the 15-judge grand bench or hold further oral arguments.
- Two lawyer groups sought to void the 2024 lower-house election in 16 suits filed across 14 high courts and branches, arguing the vote-value gap violated the constitution.
- All 16 high-court and branch decisions upheld the election’s validity after crediting the Diet’s recent corrective measures.
- The Adams method was applied for the first time in 2024, resulting in a 10-seat increase and 10-seat decrease across single-member districts.
- The maximum vote-value disparity stood at 2.06 times, illustrated by Hokkaido District 3 with about 461,000 voters versus Tottori District 1 with about 224,000.