Southern Kanto proportional representation block

Southern Kanto Proportional Representation Block
Parliamentary constituency
for the Japanese House of Representatives

Map of House of Representatives proportional blocks, with the Northern Kanto block highlighted
PrefecturesChiba, Kanagawa, Yamanashi
Population16,228,000 (October 2019 estimate)
Electorate13,657,015
Current constituency
Representatives23 (LDP-7, CDP-6, DPP-3, Japan Innovation Party-2, Komeito-2, JCP-1, Reiwa-1, Sanseitō-1)

The Southern Kantō proportional representation block (Hirei [daihyō] Minami-Kantō burokku (比例[代表]南関東ブロック)) is one of eleven proportional representation (PR) "blocks", multi-member constituencies for the House of Representatives in the Diet of Japan. It consists of Southern parts of the Kantō region covering Chiba, Kanagawa and Yamanashi prefectures. Following the introduction of proportional voting it initially elected 23 representatives in the 1996 general election, then 21 after the total number of PR seats had been reduced from 200 to 180. After reapportionment in 2002 the number was increased to 22 representatives and again to 23 in 2022.