The EC over-represents small states like Wyoming that have three electoral votes. The EC might currently be favorable to Democrats due to the key swing states happening to be a little more Democrat-leaning than the national average, but that has nothing to do with Democrats living in cities.
I support abolishing the EC and just going with popular vote to a)avoid situations like 2000 or 1876, where the EC victor loses legitimacy in the eyes of some for not having won the popular vote (especially when lawsuits are involved), and b)make states outside the swing states actually matter in campaigns. Granted, more often than not major changes lead to some unintended consequences, so it's not a reform to be made lightly.
That's always confused me. How does it overrepresent the small states?
It's simple. Consider the ratio between people and electoral votes.
