Read the Constitution. You might be surprised how the Presidency was originally determined.
Imagine if the Indians won Game 1 of the World Series 25 to zero. They then win Games 2 and 3 by a score of one to zero. They have scored 27 total points and won three games.
The Cubs win Game 4, 5, 6, and 7 by a score of 3 to zero in each of those games. The Cubs have scored 12 total points ... but the Cubs are World Series Champs having won 4 out of the 7 games.
If we went solely by the popular vote, 10 states could decide the presidency every year. Is that fair?