Re: [EM] Anyone got a good analysis on limitations of approval and range voting?

2009-11-08 Thread Kristofer Munsterhjelm
Warren Smith wrote: It seems to me that approval and range voting eliminate most of the strategic opportunity in single winner elections and the marginal improvement of other methods is fairly small. Can anyone point me to analysis, preferably at a layman level, that contradicts or supports

Re: [EM] About non-monotonicity and non-responding to previous posts...

2009-11-08 Thread Kristofer Munsterhjelm
robert bristow-johnson wrote: On Nov 5, 2009, at 1:35 PM, Kristofer Munsterhjelm wrote: robert bristow-johnson wrote: i don't think a sequence of elimination rounds would be okay, but the method of picking the biggest loser for each round needs to be debated. i am not sure what would be

Re: [EM] Anyone got a good analysis on limitations of approval and range voting?

2009-11-08 Thread Jobst Heitzig
Dear Kristofer, both Approval Voting and Range Voting *are* majoritarian: A majority can always get their will and suppress the minority by simply bullet-voting. So, a more interesting version of your question could be: Which *democratic* method (that does not allow any sub-group to suppress

[EM] Anyone got a good analysis on limitations of approval and range voting

2009-11-08 Thread Warren Smith
OK, this is an attempt to reply to Robert Bristow-Johnson. WDS: For Condorcet systems with ranking-equalities allowed, they might behave better with strategic voters, though. I've posted on that topic before. RBJ: ... so [range is] *not* always better than every rank-order system for ...

Re: [EM] Anyone got a good analysis on limitations of approval andrange voting?

2009-11-08 Thread Terry Bouricius
Matthew, I'm not sure if it is quite at the layman level, but Prof. Nicloaus Tideman's recent book Collective Decisions and Voting has an analysis of vulnerability to strategic manipulation of virtually every single-winner voting method that has ever been proposed and concludes that Range

[EM] (no subject)

2009-11-08 Thread Warren Smith
Terry Bouricius: I'm not sure if it is quite at the layman level, but Prof. Nicloaus Tideman's recent book Collective Decisions and Voting has an analysis of vulnerability to strategic manipulation of virtually every single-winner voting method that has ever been proposed and concludes that Range

Re: [EM] About non-monotonicity and non-responding to previous posts...

2009-11-08 Thread robert bristow-johnson
On Nov 8, 2009, at 6:33 AM, Kristofer Munsterhjelm wrote: robert bristow-johnson wrote: On Nov 5, 2009, at 1:35 PM, Kristofer Munsterhjelm wrote: ... Unlike FairVote et al, we don't have a strong voice saying Hey public, if you think Plurality sucks, implement [method here]. but if

Re: [EM] Anyone got a good analysis on limitations of approval andrange voting?

2009-11-08 Thread Raph Frank
On Sun, Nov 8, 2009 at 5:22 PM, Terry Bouricius ter...@burlingtontelecom.net wrote: A somewhat more accessible (and available online for free) analysis of strategic vulnerability of various methods is in this doctoral paper by James Green-Armytage (Strategic voting and Strategic Nomination:

Re: [EM] (no subject)

2009-11-08 Thread Jonathan Lundell
On Nov 8, 2009, at 10:00 AM, Warren Smith wrote: 2. Bouricius forgot to mention, same way he usually forgets to mention, that Tideman also found IRV to be unsupportable. conditionally supportable, actually. Election-Methods mailing list - see http://electorama.com/em for list info

Re: [EM] Anyone got a good analysis on limitations of approval andrange voting?

2009-11-08 Thread Michael Allan
Terry and Matthew, Terry Bouricius wrote: I'm not sure if it is quite at the layman level, but Prof. Nicloaus Tideman's recent book Collective Decisions and Voting has an analysis of vulnerability to strategic manipulation of virtually every single-winner voting method that has ever been

Re: [EM] (no subject)

2009-11-08 Thread Warren Smith
under a condition which is, in fact, violated. On 11/8/09, Jonathan Lundell jlund...@pobox.com wrote: On Nov 8, 2009, at 10:00 AM, Warren Smith wrote: 2. Bouricius forgot to mention, same way he usually forgets to mention, that Tideman also found IRV to be unsupportable. conditionally

Re: [EM] (no subject)

2009-11-08 Thread Terry Bouricius
Response to Warren... inserted below each of his points (marked by ***) Terry Bouricius - Original Message - From: Warren Smith warren@gmail.com To: election-methods election-meth...@electorama.com Sent: Sunday, November 08, 2009 1:00 PM Subject: [EM] (no subject) Terry Bouricius:

Re: [EM] Anyone got a good analysis on limitations of approval andrange voting?

2009-11-08 Thread Juho
On Nov 8, 2009, at 8:43 PM, Raph Frank wrote: On Sun, Nov 8, 2009 at 5:22 PM, Terry Bouricius ter...@burlingtontelecom.net wrote: A somewhat more accessible (and available online for free) analysis of strategic vulnerability of various methods is in this doctoral paper by James

[EM] Bouricius reply, BR, Tideman, recent USA elections

2009-11-08 Thread Warren Smith
2. Bouricius forgot to mention, same way he usually forgets to mention, that Tideman also found IRV to be unsupportable. *** 2. Warren Smith is wrong. He either hasn't read Tideman or is intentionally miss-representing Tideman here. --I wrote a review of Tideman's book, remember? And I cited

Re: [EM] Bouricius reply, BR, Tideman, recent USA elections

2009-11-08 Thread robert bristow-johnson
On Nov 8, 2009, at 7:50 PM, Jonathan Lundell wrote: On Nov 8, 2009, at 4:35 PM, Warren Smith wrote: Tideman said IRV was unsupportable if it is feasible to compute pairwise matrix. That was because Tideman had other voting methods he considered clearly superior to IRV and these methods used

Re: [EM] Bouricius reply, BR, Tideman, recent USA elections

2009-11-08 Thread Jonathan Lundell
On Nov 8, 2009, at 10:40 PM, robert bristow-johnson wrote: On Nov 8, 2009, at 7:50 PM, Jonathan Lundell wrote: On Nov 8, 2009, at 4:35 PM, Warren Smith wrote: Tideman said IRV was unsupportable if it is feasible to compute pairwise matrix. That was because Tideman had other voting methods

Re: [EM] Bouricius reply, BR, Tideman, recent USA elections

2009-11-08 Thread robert bristow-johnson
On Nov 9, 2009, at 1:46 AM, Jonathan Lundell wrote: On Nov 8, 2009, at 10:40 PM, robert bristow-johnson wrote: On Nov 8, 2009, at 7:50 PM, Jonathan Lundell wrote: On Nov 8, 2009, at 4:35 PM, Warren Smith wrote: Tideman said IRV was unsupportable if it is feasible to compute pairwise