Hi, I am an American English teacher.
in America, every person has one vote in which they can cast. But, really who elects the president is decided by the "Electoral College". The president who wins is not decided directly by the voters. Instead, they are elected indirectly by "electors" who are elected by popular vote on a state-by-state basis. The number of electors in each state is equal to the number of members of Congress to which the state is entitled!