lol true, race lists were about 40
Nice and simple way to do it would be create a new folder when the server starts (GMX). Every time a race is either played (or maybe even added to vote list) it create a racename.void file, then when a new vote is created, it checks if the file is the void folder. If it's in the void folder, do not add to vote list.
Not the quickest method, but it would work.