On Sun, Feb 1, 2009 at 6:04 PM, Kathy Dopp <kathy.d...@gmail.com> wrote: > OK, to get references to how it is a problem of exponential difficulty > to count an STV election I am told to > > Google "Bartholdi STV" and you'll come up with many citations.
I think the point here is that it is very hard to manipulate PR-STV. To work out the optimal strategic vote is NP-hard. "(Bartholdi and Orlin, 1991) Manipulation of STV for electing a single winner is NP-complete." This doesn't mean that the election is NP complete to actually count. It means that people are less likely to be strategic (as it is almost impossible to actually work out the strategically optimal vote). ---- Election-Methods mailing list - see http://electorama.com/em for list info
