Unless you decentralize voting in elections, with people having only a single online identity, you will always need the electoral college (or similar system).
The Electoral college prevents the mass population centers from dominating the politics of the country. After all, who wants New york City, Florida, California, or Boston to decide who wants to be the next president? With the liberal bias of these places, if the Electoral college wasn't around, we'd have liberal president after liberal president after liberal president.