プログレッシブ和英中辞典(第4版)の解説
とうせん【当選】
❶〔選挙に〕当選する be elected
彼は東京１区から代議士に当選した
He was elected to the Diet from Tokyo's first district.（▼再選であればHe was returned...となる）
無競争で［絶対多数で/無投票で］議長に当選した
He was elected chair unopposed [by an absolute majority/without a vote].
彼女は当選の見込みがある［ない］
She is in [out of] the running.
その候補者は当選確実である
The candidate 「has been projected to win [is sure of being elected].
彼の当選は無効となった
His election was invalidated [declared void].
彼は今のところ当選圏内にいる
He is at present within range of being elected.
❷〔懸賞などで〕
彼は懸賞論文の１等に当選した
He won (the) first prize in an essay contest.
当選議員
a successful candidate for 「the Diet [an assembly]
当選者
❶〔選挙で〕a successful [an elected] candidate
❷〔懸賞などで〕a prizewinner
当選小説
a prizewinning novel
当選無効
invalidation [《英》 annulment] of ((a person's)) election