Original: Each league's award is voted on by members of the Baseball Writers Association of America, with two representatives from each team, which means 28 ballots are cast for the American League winner, and 32 ballots are cast for the National League.
Simplified: Each league's award is voted on by two members of the Baseball Writers Association of America in each league city, meaning 28 ballots are cast for the American League winner, and 32 for the National League.