Two groups of lawyers said they are filing lawsuits with courts across Japan seeking nullification of the outcome of Sunday's Upper House election due to the uncorrected disparity in the weight of votes between constituencies.
The focus is on whether the disparity in the value of votes in the nation's 45 electoral districts will be judged as unconstitutional, after the Diet last year enacted a law designed to narrow the vote weight gaps between voters.
While keeping the total number of Upper House seats unchanged at 242, the latest legislation merged four two-seat prefectures — Tottori with Shimane and Tokushima with Kochi — into two two-seat constituencies.