I just ran this query on the Stack Overflow data dump. It highlights all answers that are accepted which happen to have another answer which is voted higher and have less than a -1 score. (wow thats a lot of waffles to chew on)
Anyway going through the worst offenders (posts are linkable) these answers really do not seem to deserve the #1 spot below the question.
Instead if an answer is marked correct AND it happens to have a -2 / -3 score I think it kind of makes sense to just sort it normally and have it pop up at the bottom of the list.
That way when people Google it they will not see the bad answers
I vaguely recall that this used to be the case though I am not sure.