[EM] An interesting real election
Andrew Myers
andru at cs.cornell.edu
Sat Jan 29 14:40:39 PST 2011
Here is an unusual case from a real poll run recently by a group using
CIVS. Usually there is a Condorcet winner, but not this time. Who should
win?
Ranked pairs says #1, and ranks the six choices as shown. It only has to
reverse one preference. Schulze says #2, because it beats #6 by 15-11,
and #6 beats #1 by 14-13. So #2 has a 14-13 beatpath vs. #1. Hill's
method ("Condorcet-IRV") picks #6 as the winner.
-- Andrew
1. 2. 3. 4. 5. 6.
1.
- 13 15 17 16 13
2.
9 - 13 14 17 15
3. 11 11 - 13 15 14
4.
9 10 10 - 14 13
5.
11 10 9 10 - 13
6.
14 11 11 13 10 -
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