noun
House of Representatives election
Refers specifically to elections for the lower house of Japan's National Diet.
次の衆議院議員選挙はいつですか。
When is the next House of Representatives election?
Election for the House of Councillors, the upper house of the Diet.
Compound of 衆議院 (House of Representatives) + 議員 (member of an assembly) + 選挙 (election).