[EM] Ronald Tannenwald's example
Ron Tannenwald
rtannenwald at UMASSD.EDU
Fri Apr 16 10:16:09 PDT 1999
>Dear Ronald Tannenwald,
>
> Thank you for chiming in.
>
> As I understand the Salva method, I think candidate B is to be the
>Salva Voting winner of your example.
> If a candidate loses the lead position then different candidates are
>to have choice/votes transferred in the next cycle of transfers. The
>candidate that lost the lead is to have his next available choices
>transferred in the next cycle of choice/vote transfers. And the candidate
>that takes the lead will not have any choice/votes transferred in the next
>cycle of transfers.
> I will show in your example as follows:
>
> A-B B-C-D C-B-D
> 49% 25% 26%
>First cycle of transfers will have B giving C 25% and C will give B 26%
>
> +26% +25%
> ---- ---- ----
> 49% 51% 51%
>
> Allow me to give one vote to candidate B so that the tie can be broken
>and we can complete the example. Candidate B is now the lead candidate with
>51% +1 vote.
>
> The second cycle will transfer the second choices of candidate A and
>the third choices of candidate C, as follows:
>
> A-B B-C-D C-B-D D
> 49% 51% +1 51%
>second transfers 49% 26%
> ---- ------- ----- ----
> 49% 100% +1 51% 26%
>
> Candidate B is the Salva Voting winner.
> Salva Voting has elected the Condorcet winner(whatever that means).
>
>Regards,
>Donald Davison
>
>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
>Donald!
>
> Consider the following election situation with 4 candidates for a single
>position.
>
> 49% 25% 26%
> _____ ____ ____
>
> A B C
> B C B
> D D
>
> Method Winner
> ________ _______
>
> plurality A
>
> with runoff C
>
> Borda B
>
> Condorcet B
>
> approval B
>
> Hare C
>
> Salva D ??
>
> If I understand this idea, it isn't even Paretto much less monotonic!
>
> Respectfully,
>
>Ronald Tannenwald
>Chairperson, Mathematics Department
>UMass Dartmouth
>
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> T H E C O D E O F H O N O R F O R R E F O R M A C T I V I S T S
>
> Any group of reform activists that are thinking about a petition drive
>to place a proposal on the ballot are to present their proposal beforehand
>to all other reform activists that they know of. The time for debate and
>negative comments is before the petition stage. Once the group makes its
>final proposal and enters the petition stage, the debates and negative
>comments by all reform activists is to cease.
> At this time each activist is to make an honest evaluation. If the
>initiative will improve government then each activist is to find it in his
>heart to support the initiative, even if it is not exactly what the
>activist would like.
>
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> | Q U O T A T I O N |
> | "Democracy is a beautiful thing, |
> | except that part about letting just any old yokel vote." |
> | - Age 10 |
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Dear Donald,
Thank you for explaining the Salva method.I don't agree with the assertion
that one's lower alternates cannot contribute to the defeat of one's preferred
candidate.Consider the following:
49% 3% 23% 25%
_____ ____ ____ ____
A B B C
A C B
In this scenario A is victorious. Had the 3% block voted only for their
first choice then B would have won.
Cordially,
Ronald Tannenwald
Chairperson, Mathematics Department
UMass Dartmouth
North Dartmouth MA, 02747
(508) 999-8746
Fax: 508-910-6917
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