[EM] Corrected "strategy in Condorcet" section

[Juho]

Margins vs. winning votes is another long term discussion topic on  
this list. There have been many opinions and the final conclusions  
may be more difficult to draw than in the Range strategy question. I  
write some short notes to enlighten also the margins side of this  
question.

1) It can be debated if Condorcet methods are in practice (large  
scale public elections) vulnerable to strategies. If not, then both  
margins and winning votes are safe enough and other criteria can be  
used to pick one of them for use. It is hard to find plausible  
scenarios where some strategies could be successfully applied in  
large scale public Condorcet elections. Also the need to develop and  
use counter strategies is questionable if the first round of  
strategies would not work in the first place.

2) There are as well cases where winning votes are more vulnerable to  
strategies than margins. So the question is not one-sided.

3) In some cases winning votes pick strange winners already with  
sincere votes. Margins can be said to be more natural and elect  
better candidates in general. This of course depends to some extent  
on what kind of winners one wants the election method to pick.

Some links that touch these topics and might therefore be of interest:
http://lists.electorama.com/pipermail/election-methods-electorama.com/ 
2007-February/019660.html (there are lots of mails in the February  
archive)
http://lists.electorama.com/pipermail/election-methods-electorama.com/ 
2005-July/016440.html
http://lists.electorama.com/pipermail/election-methods-electorama.com/ 
2005-July/016450.html
(Sorry about providing links only to my own mails. It's easier to  
remember them than the others :-). Seek for alternative opinions  
close to these in the archive.)

Juho



On Jul 23, 2007, at 5:42 , ws at cs.brown.edu wrote:

> Michael Ossipoff has convinced me that winning votes Condorcet does  
> not suffer
> from the mess that margins Condorcet does. I've therefore corrected  
> my paper
> (http://www.cs.brown.edu/~ws/approval.pdf) to indicate this.
>
> ws
>
>
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