Terry Bouricius wrote:
2. Why did FairVote first start advocating IRV instead of Condorcet? FairVote's initial and still leading concern is the promotion of proportional representation (the majority should elect the majority of seats, but minorities should be fairly represented at the table). Because of the anti-party sentiment in the U.S. ("I vote for the individual, not the party"), made the adoption of party list voting appear unachievable. The most plausible form or PR for the U.S. seemed to be the candidate-based STV, which already had been proven to be adoptable in the U.S. earlier in the 20th century, and used for many generations in Australia as a model. There are no functioning models of a Condorcet variant for PR, and no functioning models in government elections for single-seat Condorcet. It is virtually impossible to get a government to adopt a voting method that is not already used by other governments, or at least by numerous non-governmental organizations....so Condorcet was never a real option. FairVote has been involved in several near-miss referenda to adopt STV PR (Cincinnati, San Francisco, Lowell, etc.). IRV is merely the single-seat variant of FairVotes' preferred PR system. As happened in the Australia national Senate elections, which transitioned from IRV to STV-PR, once IRV was adopted, a huge barrier (the use of ranked ballots) to adopting STV PR is removed.
Is it virtually impossible to get a government to adopt a voting method that has been used before but isn't anymore, as well? If not, then Borda-elimination - Nanson's method - has been used in Michigan, and it is Condorcet. There are certainly better Condorcet methods, but it has been used.
As for Condorcet PR, there are now methods that can provide PR within the context of Condorcet - for instance CPO-STV or Schulze STV. They probably didn't exist when FairVote made the decision, however.
---- Election-Methods mailing list - see http://electorama.com/em for list info
