Apologies for previous incomplete message. I hate the keyboard on this laptop, which seems to interpret simultaneous depresion of some combination of control, shift and function keys on the left as "send mail." Grrr.
On Mon, 12 Oct 2020 at 23:23, Andrew Harvey <andrew.harv...@gmail.com> > wrote:I wrote about changing from a for/against vote to a pick your > preferred option at > https://www.openstreetmap.org/user/aharvey/diary/394419 > > Interested to hear what others think about this. > There are inherent problems when using first-past-the-post voting with more than two political candidates, and these have been covered extensively in the field of political science. Assume somebody who favours X over Y adds Z (that is similar to Y) in an attempt to split the vote for Y. It could turn 4,6 for X,Y into 4,3,3 for X,Y,Z. Assume Y is a compromise between X and Z. Those who want X could live with Y. Those who want Z could live with Y. The vote ends up as 4,3,3 for X,Y,Z, so X wins even though only 4 people wanted X and 6 people did not want X and Y would have been a compromise acceptable to all. There are many other problems, particularly if bad actors are involved. You can get around some of them with schemes like single transferable vote, but even those schemes have problems. The scheme with fewest problems is a Condorcet method. Even that is not without flaws, but the biggest can be eliminated by saying that if you get a loop you have a completely new vote. It's a lot of work to make this fly. Maybe you should put propose a list of options and we'll vote on it... -- Paul
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