Dei 121 membri eletti a ogni tornata, 73 sono eletti nei 47 distretti delle prefetture e 48 da una lista nazionale con sistema proporzionale. ###>Of the 121 members subject to election each time, 73 are elected from the 47 prefectural districts (by single non-transferable vote) and 48 are elected from a nationwide list by proportional representation with open lists.