[kannanvijayan]

Yeah that was why I sort of let go of that bit. The best solution I could come up with was to keep the population sizes small and re-run the vote if a drop occurred.

This doesn't work for large populations because the probability of a drop occurring during the selection procedure approaches 1. There, I was considering a tournament style selection - partition the population into small groups, select one from each, and treat the winners as a new candidate population.