The Constitution lists only three qualifications for the Presidency —
the President must be 35 years of age,
be a natural born citizen, and
must have lived in the United States for at least 14 years.
And though millions of Americans vote in a presidential election every four years, the President is not, in fact, directly elected by the people. Instead, on the first Tuesday in November of every fourth year, the people elect the members of the Electoral College.
Apportioned by population to the 50 states — one for each member of their congressional delegation (with the District of Columbia receiving 3 votes) — these Electors then cast the votes for President.
There are currently 538 electors in the Electoral College.