Gladly! Lets start with an illustration that shows why the massive disparity between republican vs democrat votes causes concern for republican voters:
Somehow, Clinton won the popular vote even though the vast majority of counties in the US seemed to have voted republican. This is noteworthy because there is a correlation between population density, and % of population utilizing government services. Now, let me give you a slightly more indepth reasonwhy we need the electoral college for fairness in a national election. I would like to show you some numbers.. and why they matter:
Nebraska:1.9m (5ev)
Kansas: 2.9m (6ev)
Oklahoma: 3.9m (7ev)
Arkansas: 3m (6ev)
Miss: 3m (6ev)
Alabama: 5m (9ev)
N. Dakota: 750k (3ev)
S. Dakota: 855k (3ev)
Montana: 1.1m (3ev)
Alaska: 750k (3ev)
Pennsylvania: 13m (20ev)
Texas: 28m (38ev)
(Total pop: 64.15m) (total ev: 109)
These are 12 states who, in this year's election voted Republican. The TOTAL population for ALL TWELVE of these states is 64million.. give or take a few hundred thousand. All but 2 basically represent the heartland. Why am I making this important, you might ask? let me give you another list.. its a little shorter, Clinton didn't win that many states, you know.
California: 39m (55ev)
New York (state): 20m (29ev)
Virginia: 8.5m (13ev)
Washington State: 7m (12ev)
(total pop:74.5m) (total ev:109)
These are just 4 states that voted Democrat. I point this out because if it were left ONLY to popular vote, the first state on this list would have nullified THE ENTIRE MIDWEST of this country. And while you might not care about it because they didn't vote Democrat, they are still a part of the U.S.A. and deserving of a voice. It takes the combined population of all 12 states listed to still come up short against the first 3 listed.
The population of those 4 states should not have, in total, more voice then TWELVE other states, in total. republican don't even complain about the MASSIVE disparity between the largest consistent blue state (Cali@55) vs the largest consistent red state (Tex@38). It's important because people in the mid-west, for example, have much different needs/desires from their president than high density metropolis, or coastal cities. Allowing the country to move toward popular vote has a much greater chance of disenfranchising the people of this country. In short, we need the Electoral College because it is the equalizer that ensures ALL states have a voice, all states play a part in the direction of our government. It worked just fine as it always did when Obama, Bill Clinton, and Jimmy Carter won, and it worked just fine as it always did when Bush (jr/sr), and Reagan won. If you want a system that speaks for the majority of this country, and not just a majority of cities.. this is the fairest system that could have been produced. Our founders had the wisdom to see the expansive potential of our nation, and indeed have we expanded. they also wanted to ensure that elections could not be controlled simply by monopolizing areas that have a high density population from having more sway than less populated, but equally American ones.