[EM] Real IRV Election, Disputable Result

Dave Ketchum davek at clarityconnect.com
Tue Mar 14 09:47:44 PST 2006

SUMMARY of what I see since Rep. Jim Condon asked for help:

With IRV, tie-rank votes need to either be prohibited or the exact way of 
accounting for them defined (counting them with each tied candidate 
holding the same rank encourages taking advantage of such voting).  With 
Condorcet, tie-rank should be normal, for voters can like it and it gives 
no special advantage to users with the round-robin counting used.

IRR and VRR are being used here as synonyms for Condorcet.

BTW - IRV claims to getting a majority winner need understanding.  Try 
voters who do not rank every candidate and could vote 25A  30B  35C.  IRV 
will discard the 25A and declare C the winner among the 65 votes still 
being counted.  Agreed C properly wins, but total votes were 90.

On Tue, 14 Mar 2006 01:06:02 -0800 Brian Olson wrote:

Brian recognized his previous error, and agreed that Kiss won that 
election with either counting method.

On Tue, 14 Mar 2006 00:55:02 -0800 Brian Olson wrote, and I suggest reading:

He mentions difficulty with combining multiple precincts in a district. 
My response is that, while it is bad, it is not as bad as he suggests - 
you can note that multiple voters can vote identical patterns and pass up 
counts for each pattern for central combining:
      Besides counts of nulls and spoiled ballots (I here count equals as 
spoiled with IRV), and counting votes for all but one candidate the same 
as listing that last candidate as least liked:
      2 candidates - same 2 counts as with Plurality.
      3 candidates - A  B  C  A,B  A,C  B,A  B,C  C,A  C,B
      4 candidates - A  B  C  D  A,B  A,C  A,D  B,A  B,C  B,D  C,A  C,B 
C,D  D,A  D,B  D,C  A,B,C  A,B,D  A,C,B  A,C,D  A,D,B  A,D,C (and 18 more 
with each other candidate as leader)
      more - number of possible patterns goes up, but usage of all becomes 
less likely

On Tue, 14 Mar 2006 01:39:57 -0500 I wrote, and suggest reading:

On Mon, 13 Mar 2006 21:53:44 -0800 Jonathan Lundell wrote, and I see 
nothing valuable to read.

On Mon, 13 Mar 2006 22:58:36 -0500 Eric Gorr quoted an article worth 
reading by Ralph Suter.
  davek at clarityconnect.com    people.clarityconnect.com/webpages3/davek
  Dave Ketchum   108 Halstead Ave, Owego, NY  13827-1708   607-687-5026
            Do to no one what you would not want done to you.
                  If you want peace, work for justice.

More information about the Election-Methods mailing list