noun
election result; win or lose an election
Refers specifically to the outcome of an election: whether a candidate was elected (当選) or not (落選). Often used in phrases like 当落線上 (on the borderline of winning/losing).
選挙の当落はまだわからない。
The election result is still unknown.
彼は当落線上にいる。
He is on the borderline between winning and losing.
noun
lottery result; win or lose a draw
Used for the outcome of lotteries, raffles, and similar draws. The focus is on whether one wins a prize or not.
宝くじの当落を確認する。
Check the lottery results.