noun
candidates who have won or are projected to win an election
Media and political term referring collectively to candidates who have either been declared elected or are projected to be elected based on early results. Often used in news headlines and election coverage.
開票速報では、当選当確の候補者が次々と発表された。
In the vote-counting updates, candidates who had won or were projected to win were announced one after another.
当選当確の知らせを受けて、陣営から大きな歓声が上がった。
Upon receiving the news of being projected to win, a loud cheer went up from the campaign office.
Abbreviation of 当選確実, meaning 'projected to be elected'; 当選当確 is a broader term covering both confirmed and projected winners.
Compound of 当選 (election win) and 当確 (abbreviation of 当選確実, 'projected to be elected'). It is from 当選及び当選確実.