text: The electoral college is a good idea, but people can betray the trust of others. In Source 3 it says "...each party selects a slate of electors trusted to vote for the party's nominee..." That means the voters have the ability to vote for the other candidate. If someone decides to vote for the other candidate then some peoples votes will have been for nothing. If we had the popular vote voting system then everyones vote would go to the specific candidate, and people would not have to hope the person they slate they pick has everyone pick the candidate they were trusted to vote for.