Hi Daniel, I don't think that your proposal for multi-seat Condorcet will effectively provide proportional representation. I think that similar proposals have been made on the list and rejected, that is, proposals with the idea of electing the Condorcet winner, absorbing his or her votes somehow, and repeating the process until all seats are filled. Your proposal may not be identical to any that have been made, but I think that it is similar enough to have the same problems, i.e. a centripetal bias, and who knows what strategic incentives. For an effective union of the Condorcet and STV principles for the purpose of proportional representation, I recommend Nicolaus Tideman's CPO-STV (comparison of pairs of outcomes by single transferable vote) method.
Tideman, T.N. (1995). The single transferable vote. Journal of economic perspectives 9(1): 27-38. Tideman, T.N. and Richardson, D. (2000). Better voting methods through technology: The refinement-manageability trade-off in the single transferable vote. Public Choice 103: 13-34. http://www.econ.vt.edu/tideman/rmt.pdf http://fc.antioch.edu/~james_green-armytage/voting_methods/survey.htm#cpostv my best, James ---- Election-methods mailing list - see http://electorama.com/em for list info