Question: Who elect the president of the united states?
Disambiguated questions and answers: question: Who casts indirect ballots to elect the president of the united states?
Who casts direct votes to elect the president of the united states?
answer: citizens of the United States who are registered to vote in one of the fifty U.S. states or in Washington, D.C.
electors
members of the Electoral College
Natural Questions answer: the Electoral College (from the Wikipedia article "President-elect of the United States")