The TÃ Âkai proportional representation block () is one of eleven proportional representation (PR) "blocks", multi-member constituencies for the House of Representatives in the Diet of Japan. It consists of the TÃ Âkai region, and consists of the prefectures of Gifu, Shizuoka, Aichi, and Mie. Following the introduction of proportional voting, TÃ Âkai elected 23 representatives by PR in the 1996 general election, reduced to 21 in the election of 2000 when the total number of PR seats was reduced from 200 to 180.