What are you talking about? Bush carried the South both times.
Statistically, Bush barely carried the South. Every race was too close to call and Flori duh was a few hundred votes of throwing the election to Gore in 2000. Even though Gore won the US popular vote by a few thousand votes.
Ohio was the deciding factor in 2004, again by a very slim statistical margin. Although Kerry did not win the popular vote it was still the subject of a recount in some precincts.
Why do you think that some people are pushing the abolition of the electoral college?
If every election can split the vote 50 - 50, with less than half of eligible voters participating in the election there is more opportunity for voter fraud to be the deciding factor.