Chūgoku proportional representation block

Chūgoku Proportional Representation Block
Parliamentary constituency
for the Japanese House of Representatives
Map of House of Representatives proportional blocks, with the Chūgoku block highlighted
PrefectureTottori, Shimane, Okayama, Hiroshima and Yamaguchi
Electorate5,832,097 (2026)
Current constituency
Created1994
Representatives10

The Chūgoku proportional representation block (Japanese: 比例中国ブロック, Hepburn: Hirei chūgo ku burokku) 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 prefectures of Tottori, Shimane, Okayama, Hiroshima, and Yamaguchi. Following the introduction of proportional voting, Chūgoku elected 13 representatives by PR in the 1996 general election, reduced to 11 in the election of 2000, and again to 10 in 2024.