List of districts of the House of Representatives of Japan

Currently, 176 members are elected from 11 multi-member districts (called proportional representation blocks or PR blocks) by a party-list system of proportional representation (PR), and 289 members are elected from single-member districts, for a total of 465.

Masakazu Sekiguchi Hiroyuki Nagahama Yukihiko Imasaki Kazuo Ueda

[1] The original draft bill in 1993 by the anti-LDP coalition of Prime Minister Morihiro Hosokawa included proportional party list voting on a national scale, an equal number of proportional and district seats (250 each) and the possibility of split voting.

[2] After the Liberal Democratic Party (LDP) had returned to power later that year, it was changed to include proportional voting in regional blocks only, the number of proportional seats was reduced, but the possibility to cast two separate votes was kept in the bill.

In the majoritarian segment, it will change 97 districts in 19 prefectures, six are eliminated without replacement (one each in Aomori, Iwate, Mie, Nara, Kumamoto and Kagoshima).

In the proportional segment, four "blocks" lose a seat each (Tōhoku, N. Kantō, Kinki, Kyūshū).

[6][7] The block constituency for Hokkaidō (比例北海道ブロック) elects 8 members proportionally.

Also includes the Izu Islands and Ogasawara Subprefecture District of Nishitama The block constituency for Hokuriku-Shin'etsu (北陸信越) elects 11 members proportionally.

It combines five prefectures of the Hokuriku and Shin'etsu subregions in northern Chubu.

The block constituency for Tokai (東海) elects 21 members proportionally.