Re: [EM] PR-STV with approval based elimination

2009-05-05 Thread Dave Ketchum
I have trouble finding value in the specific label non-approved. All that I do not rank share being liked less than any others - as do those I assign lower ranks than others I indicate liking better. DWK On May 5, 2009, at 2:02 PM, Raph Frank wrote: On Tue, May 5, 2009 at 6:28 PM, Dermot

Re: [EM] PR-STV with approval based elimination

2009-05-05 Thread Dan Bishop
Dermot Cochran wrote: On 30 Apr 2009, at 17:24, Raph Frank wrote: Another option would be to have the voter submit a ranked ballot and also have an approval threshold candidate. All candidates ranked higher than that psuedo-candidate would be considered approved. However, that gives voters

Re: [EM] PR-STV with approval based elimination

2009-05-03 Thread Kristofer Munsterhjelm
Dan Bishop wrote: You could use Plurality (with vote-splitting between equally ranked candidates) to determine surpluses and a different method to determine eliminations. For example, [snip] So the winning set is {Andre, Escher, Gore}. Coincidentally, the same as the CPO-STV result.

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread James Gilmour
Raph Frank Sent: Thursday, April 30, 2009 6:33 PM Also, I think later no harm basically means won't compromise. I am not sure that it is even a desirable criterion for a method to have and think that the fact that a method that doesn't meet later no harm is a not major issue. I don't

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Raph Frank
2009/5/1 James Gilmour jgilm...@globalnet.co.uk: One problem with abandoning LNH is that it opens the way for strategic voting, that is, when a voter ranks the candidates in some order other than the sincere 'first to last' order of preference because the voter knows that some feature of

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Jonathan Lundell
On May 1, 2009, at 6:02 AM, Raph Frank wrote: 2009/5/1 James Gilmour jgilm...@globalnet.co.uk: One problem with abandoning LNH is that it opens the way for strategic voting, that is, when a voter ranks the candidates in some order other than the sincere 'first to last' order of preference

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Raph Frank
On Fri, May 1, 2009 at 3:56 PM, Jonathan Lundell jlund...@pobox.com wrote: The strategy is effectively identical in both versions, despite the difference in form. That is, in both your mechanisms it seems apparent on the face of it that a voter would not have a motivation, strategic or

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Kristofer Munsterhjelm
Jonathan Lundell wrote: On May 1, 2009, at 6:02 AM, Raph Frank wrote: 2009/5/1 James Gilmour jgilm...@globalnet.co.uk: One problem with abandoning LNH is that it opens the way for strategic voting, that is, when a voter ranks the candidates in some order other than the sincere 'first to

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Raph Frank
On Fri, May 1, 2009 at 6:53 PM, Kristofer Munsterhjelm km-el...@broadpark.no wrote: If there are two seats and the left and right factions are of equal size, and both have respective centrists, the outcome should have a left centrist (which is close to the median voter of the left faction) and

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Kristofer Munsterhjelm
Raph Frank wrote: On Fri, May 1, 2009 at 6:53 PM, Kristofer Munsterhjelm km-el...@broadpark.no wrote: If there are two seats and the left and right factions are of equal size, and both have respective centrists, the outcome should have a left centrist (which is close to the median voter of the

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Raph Frank
On Fri, May 1, 2009 at 8:27 PM, Kristofer Munsterhjelm km-el...@broadpark.no wrote: The problem in using any other method than Plurality for counting the votes in an STV method is that of elimination. If someone votes for A with strength 1 and B with strength 0.5, and A wins, then how much do

Re: [EM] PR-STV with approval based elimination

2009-05-01 Thread Dan Bishop
Kristofer Munsterhjelm wrote: The problem in using any other method than Plurality for counting the votes in an STV method is that of elimination. If someone votes for A with strength 1 and B with strength 0.5, and A wins, then how much do you downweight that voter? The A voters should be

[EM] PR-STV with approval based elimination

2009-04-30 Thread Raph Frank
A nice feature of PR-STV is that it still meets the Droop Criterion no matter who you pick to eliminate in rounds where no candidate meets the quota (assuming you don't eliminate an elected candidate). However, there doesn't seem to be much discussion on using a better elimination method. The

Re: [EM] PR-STV with approval based elimination

2009-04-30 Thread Jonathan Lundell
On Apr 30, 2009, at 9:24 AM, Raph Frank wrote: A nice feature of PR-STV is that it still meets the Droop Criterion no matter who you pick to eliminate in rounds where no candidate meets the quota (assuming you don't eliminate an elected candidate). However, there doesn't seem to be much

Re: [EM] PR-STV with approval based elimination

2009-04-30 Thread Raph Frank
On Thu, Apr 30, 2009 at 5:42 PM, Jonathan Lundell jlund...@pobox.com wrote: The problem with these approaches (a problem, anyway) is that they abandon later-no-harm. That seems a rather high price to pay. Well, the first suggestion, where the approval ballot is separate from the ranked ballot

Re: [EM] PR-STV with approval based elimination

2009-04-30 Thread Jonathan Lundell
On Apr 30, 2009, at 10:33 AM, Raph Frank wrote: On Thu, Apr 30, 2009 at 5:42 PM, Jonathan Lundell jlund...@pobox.com wrote: The problem with these approaches (a problem, anyway) is that they abandon later-no-harm. That seems a rather high price to pay. Well, the first suggestion, where

Re: [EM] PR-STV with approval based elimination

2009-04-30 Thread Raph Frank
On Thu, Apr 30, 2009 at 6:47 PM, Jonathan Lundell jlund...@pobox.com wrote: Well, we can disagree about that, no doubt. For me, it's a high priority to eliminate or reduce strategic considerations from the actual voting act, and LNH eliminates a big one. However, if the approval and rank votes