The Tokyo High Court on Wednesday ruled unconstitutional the disparity of up to 4.77 times in the weight of votes in July's Upper House election, while dismissing the plaintiffs' demand that the poll results in Tokyo and Kanagawa prefectural constituencies be nullified.
The Matsue branch of the Hiroshima High Court found the same day that the vote weight disparity in the House of Councilors election was "in a state of unconstitutionality" but rejected the plaintiffs' demand that results in the Tottori and Shimane prefectural districts should be invalidated.
The rulings are among similar lawsuits filed with 14 high courts and their branches nationwide by lawyer groups. The final ruling in the series of lawsuits will be issued by the Akita branch of the Sendai High Court on Thursday.