noun
single-seat constituency system
An electoral system where each district elects one representative. Often contrasted with 大選挙区制度 (multi-seat constituency system).
日本の衆議院選挙では、小選挙区制度と比例代表制度が併用されている。
In Japan's House of Representatives elections, the single-seat constituency system and the proportional representation system are used together.
Compound of 小 (small), 選挙区 (electoral district), and 制度 (system). The term directly describes a system of small electoral districts each electing a single representative.