How to say "by-election" in Japanese

Choosing the right word
  • 補選ほせん
    nounThe abbreviated form of 補欠選挙, meaning an election held to fill a seat that has fallen vacant, as in a legislature. Common in news reports and everyday political talk.
  • 補欠選挙ほけつせんきょ
    nounThe fuller, unabbreviated term for the same sense: an election held to fill a vacant legislative seat. It spells out the meaning in full and suits formal or explanatory contexts.

Both entries translate the same sense of 'by-election' — an election held to fill a vacant seat — with 補選 being the shorter, abbreviated form and 補欠選挙 the fuller one.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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