@lime said in What Multiwinner Method To Push For Local Boards?:
@toby-pereira said in What Multiwinner Method To Push For Local Boards?:
Well, SPAV is purely approval whereas SPAV + KP is scores, so which ends up being more proportional might depend on exactly how you define proportional and also how people vote in practice. There's always been the question with score voting of whether some voters will lose out by casting a more honest ballot but losing out strategically.
Thus my question in another thread, about whether Harmonic voting might lose the stable winner set properties of PAV. The stable winner set seems like it could provide some very strong strategy-resistance properties, similar to Condorcet in single-winner elections.
I don't think its strategy resistance is as strong as it would be with ranked ballots. With approval voting, you still have to decide whether to approve candidates you don't like as much because you think they've got a better chance of being elected.
Schulze STV uses ranked ballots and reduces to the Schulze Condorcet method in the single-winner case. It's probably more strategically robust than an approval-based method that satisfies core stability.