Resolves to the person who wins the majority of votes for US President in the Electoral College, or selected by Congress following the contingency procedure in the Twelfth Amendment.

Resolves provisionally if both the Associated Press projects a winner and the losing major party candidate concedes.

This question has a list of 10 current candidates, and resolves to "Someone else" if the winner is anyone else.

I recommend the newer and bigger market here with more options: