|Source: Real Clear Politics|
I wrote at length in defense of the college in a previous post. I wrote just before the 2012 election so I can credibly claim that my view is not a sudden discovery motivated by partisan feeling.
I don't want to repeat the whole post, though I'm still proud of it and hope I can send some traffic there.
Short version: The electoral college forces candidates to attract geographically dispersed support. Moving a swing state from 45% to 55% is much more important than moving a solid blue or solid red state from 75% to 85%.
This is vital. Our country is already polarized, and that polarization is reflected in geography. See the map. A set of rules that encourages further polarization would be a disaster. American democracy failed miserably once. 700,000 people died and government of the people, by the people, and for the people nearly did perish from the earth. Things like this don't happen again only when people think they can, and vice versa.
In a pure popular vote contest, after candidates and parties adapt their positions and coalitions of support, we are likely to see whole swaths of the country with 70, 80, 90% or more majorities of one or the other party -- and even greater demonization of the other side. Fill in the gaps what happens next.
The deep point: When you set up rules for anything, there is a tension between measurement and incentives. Once people show up at the polls on election day, there is a strong case that "each vote should count the same." But if you do that, the incentives, and hence the outcomes will be much worse.