Hallo,
Example 4:
10 ABCD
15 BACD
20 CABD
3 ABCD
Suppose Craig Carey's IFPP method is being used.
In the first round, the quota is 12. D is eliminated in the
first round. In the second round, the quota is 16 so that A
and B are eliminated and C wins.
When 7 C voters are added, then this situation looks as
follows:
10 ABCD
15 BACD
20 CABD
3 ABCD
7 C
Now in the first round, the quota is 13.75. A and D are
eliminated in the first round. In the second round, B
beats C.
This example demonstrates that IFPP violates mono-add-top
and mono-add-plump.
Markus Schulze
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