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An election held to fill a vacancy caused by the death, resignation, or removal of an elected official before their term ends.
국회의원 보궐선거가 열릴 예정이다.
A by-election for a National Assembly seat is scheduled.
시장 보궐선거에서 새로운 후보자가 당선되었다.
A new candidate was elected in the mayoral by-election.
In Korea, by-elections are governed by the Public Official Elections Act and are typically held within 60 days of the vacancy.
Use '보궐선거' in formal settings such as news reports, legal documents, or political discussions.
From 보궐 (보충 + 궐) meaning 'to fill a vacancy' and 선거 (election).
The term is used in formal contexts, particularly in political and legal discussions. It is not used colloquially.