noun
proportional representation constituency
A multi-seat electoral district where seats are allocated by proportional representation, as opposed to a single-seat constituency (小選挙区). Used in Japanese political contexts.
See also: 小選挙区
比例区では、政党の得票率に応じて議席が配分される。
In proportional representation constituencies, seats are allocated according to each party's vote share.
衆議院選挙では、小選挙区と比例区の両方で投票する。
In the House of Representatives election, voters cast ballots in both single-seat constituencies and proportional representation constituencies.
Compound of 比例 (proportion) and 区 (district, ward). A modern term used in Japanese electoral systems.