<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>Warren,</DIV>
<DIV> </DIV>
<DIV>"How true is it that approval-style voting is "strategic" for Schulze?"</DIV>
<DIV><BR>Not very true. It depends on the voter's information and sincere ratings.</DIV>
<DIV>Schulze, being a Condorcet method fails Favourite Betrayal.</DIV>
<DIV><BR>"Is Schulze with approval-style ballots a better or worse voting system </DIV>
<DIV>than plain approval?"</DIV>
<DIV> </DIV>
<DIV>If approval-style ballots are compelled than Schulze is the same as plain</DIV>
<DIV>Approval. If they are merely allowed (as Marcus Schulze and other </DIV>
<DIV>proponents favour) then in my opinion it is better than Approval.</DIV>
<DIV> </DIV>
<DIV>In the zero-information case, the voter with a big enough gap in hir sincere ratings</DIV>
<DIV>does best to rank all the candidates above the gap equal top and to strictly</DIV>
<DIV>rank all those below it (random-filling if necessary in the absence of a sincere</DIV>
<DIV>full ranking).</DIV>
<DIV> </DIV>
<DIV>I find it preferable that the zero-info. strategy for a ranked-ballot method be either</DIV>
<DIV>full sincere ranking regardless of relative ratings (as in IRV and Margins) or sincere</DIV>
<DIV>ranking above the big ratings gap and truncation below it (as in Smith//Approval).</DIV>
<DIV> </DIV>
<DIV>By "Shulze" I have been meaning Shulze(Winning Votes), the 'standard version'</DIV>
<DIV>favoured by Marcus himself and other proponents. </DIV>
<DIV> </DIV>
<DIV>In January this year I suggested a different version I prefer:</DIV>
<DIV> </DIV>
<DIV><A href="http://lists.electorama.com/pipermail/election-methods-electorama.com/2009-January/023959.html">http://lists.electorama.com/pipermail/election-methods-electorama.com/2009-January/023959.html</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Chris Benham</DIV>
<DIV> </DIV>
<DIV><BR> </DIV>
<DIV> Warren Smith wrote (8 June 2009):</DIV>
<DIV> </DIV>
<DIV>One problem is nobody really has a good understanding of what good strategy is.<BR><BR>If one believes that range voting becomes approval voting in the<BR>presence of strategic voters (often, anyhow)...<BR><BR>One might similarly speculate that<BR>strategic voters in a system such as Schilze beatpaths ALLOWING ballots<BR>with both > and = (e.g. A>B=C=D>E=F is a legal ballot) usually the<BR>strategic vote<BR>is "approval style" i.e. of form A=B=C>D=E=F, say, with just ONE ">".<BR>One might then speculate that Schulze, just like range, then becomes<BR>equivalent to approval voting for strategic voters.<BR><BR>Well... how true or false is that? Is Schulze with approval-style ballots<BR>a better or worse voting system than plain approval?<BR><BR>How true is it that approval-style voting is "strategic" for Schulze?<BR><BR>I'd like to hear people's ideas on this question. (And not<BR>necessarily just for
"Schulze" -- substitute other methods too, if you<BR>prefer.)<BR><BR>The trouble is, range voting is simple. Simple enough that you can<BR>reach a pretty full understanding of what strategic range voting is.<BR> (Which is not at all trivial,<BR>but it can pretty much be done.) In contrast, a lot of Condorcet<BR>systems including Schulze are complicated. Complicated enough that<BR>making confident statements<BR>about their behavior with strtagic voters (or even undertsnading what<BR>strtagy IS) is<BR>hard.<BR><BR>Frankly, I've heard various vague but confident claims about strategy<BR>for Schulze & the like, and my impression is those making the claims<BR>know very little about what they<BR>are talking about. I also know very little on this, the difference is<BR>I admit it :)<BR><BR><BR></DIV></div><br>
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