Denshi Jisho — Online Japanese dictionary

当選 とうせん 1: being elected;
2: being selected (to win a prize, etc.);
3: winning (in a lottery, raffle, etc.)
Common word, Noun, Suru verb 
当選 とうせんけん winning ticket (in a lottery, etc.)
Noun 
当選 とうせんしゃ successful candidate
Noun 
当選基数 とうせんきすう electoral quota (e.g. in a proportional representation system)
Noun 
当選確実 とうせんかくじつ projected to win; sure to be elected; home free
Noun 
当選圏内 とうせんけんない (having a) good chance of being elected (winning) (in an election)
Noun 
当選当確 とうせんとうかく candidates (in an election) who have won or are projected to be elected
Noun 

You can also

Look up kanji details for 当選.

Try a Yahoo Jisho search for 当選 .
Try a Goo Jisho search for 当選 .
Try a Google search for 当選 .