Non-IRO methods and IRO combined

New Democracy donald at mich.com
Mon Sep 28 02:05:13 PDT 1998


Dear Bart Ingles,

You wrote: " Maybe non-IRO methods could be improved by reverting to IRO to
eliminate very weak candidates or in case of a circular tie, etc."

     Yes!  you make a very good suggestion.

     I posted some text on this very subject a few days ago. It was in the
center of a long post. I repeat it now:

- - - - - - - - - - - - - - - repeat of text - - - - - - - - - - - - - - -
     I would like to suggest a combination of Condorcet and Choice Run-Off.
     It would work as follows:
   Step 1. Start with the first count of the ballots.
           If no majority winner, go to Step 2
   Step 2. Use the Condorcet method - which should yield a majority winner
           two out of three times. If we get a circular tie, stop,
           go back to Step 1. and drop lowest candidate.
   Step 3. Second count, less one candidate and new vote sums for the
           rest of them. If no majority winner go to Step 4.
   Step 4. Attempt Condorcet a second time - which again should yield us
           a majority winner two out of three times. If again we get a
           circular tie, stop, go to Step 3 and drop the new lowest candidate.

     This routine is to be repeated until we have a winner - either as a
result of Condorcet or Choice Run-Off. Whichever method gives us the
winner, that candidate will have won by a majority. This combination avoids
the circular ties of Condorcet and reduces the chances of any effect from
the possible flaw of Choice Run-Off - but this combination of two methods
is not as simple as using Choice Run-Off by itself.
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Regards,
Donald Davison,


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