"What are the Potential Drawbacks of eliminating the Electoral College and implementing a direct democracy for presidential elections."

 I got this question and Answer of "Quora" and it was pretty good I thought.  

A guy named "Jerry Bennett" provided the answer, so he got the props.

Still very busy at work and other things going on, once I get some more information, I will put it on here.

As they say, a picture can be worth a thousand words.

The basic rationale behind the Constitution's requirement that states elect presidents rather than the popular vote was that the framers of the Constitution favored a federation of states rather than a national ‘kingdom’ style of government. State’s rights were a guiding principle. In addition, at the time the Constitution was ratified, holding a popular vote in a timely manner was problematic (think Pony Express). So states were given the choice of how to present ‘electors’ to the election assembly (called the Electoral College) that would, in turn, cast two votes, one each for President and Vice President (no, there is no constitutional requirement that the president and vice president come from the same political party).

In our first 80 years as a nation, most state legislators, governors, and state influencers chose who the electors would be and who they would cast votes for. The number of electoral votes allowed from each state was governed by the number of state representatives in Congress (two senators + House Representatives).

This persisted until the late 1800s by which time most states adopted a ‘popular vote’ system within the state to determine the candidate the state electors would present to the college.

Tallying the popular vote within the entire country has always been a false exercise. The popular vote is only relevant within the state in which it is cast. The news media (press) invented a national popular vote and national polls—neither of which are germane to the presidential election.

In recent times, the Electoral College has been seen as a hedge against big city control of national political will. As can be seen, by the map graphic above, large US cities (predominantly Democratic in the last century) would likely control the administrative office of the federal government (Presidency) if not held in check by the Electoral process.

To go from a Federation of States to a Popular Democracy would mean the elimination of state sovereignty to some extent and a constitutional amendment that no Republican state would ratify. No Democrat has ever won the Presidency without also winning the popular vote. In contrast, Republican presidents lost the popular vote in four separate elections where they won the Presidency.