The opposite should be done.
Get rid of the archaic system we have and go with the most votes win.
Yeah, but if we did that, only the major city's votes would count. I would see that you might like that since the cities usually choose a more liberal candidate. However, I don't think states like Delaware or South Dakota would really have any say. The main problem is people in urban areas would have little problem getting other people to vote with them. Rural voters would be less credited in the respect they wouldn't be able to encourage others to vote like they do being that they're less of a populated demographic.
I can only imagine, over time candidates would only run from cities and nobody would have any representation from the country.