Eric Gorr wrote:
In a recent conversation with an IRV supporter I asked the question:
What cases would you accept as failure of IRV?
They answered:
Where the general public (or a significant fraction of it) failed to accept the results as legitimate, or at least beyond question. The 2000 and 2004 Presidential elections are examples of failed elections. San Franciso's election was heralded as a success.
They also believe that IRV has never failed to produce a fully satisfactory result. Can anyone provide evidence to the contrary?
It's going to be hard to find an example. And here's why:
Consider the five-candidate election:
Total Votes: 397 Voted needed to win: 199
Round #1:
A: 100 B: 86 C: 75 D: 73 E: 63 -- eliminated
Round #2:
A: 100 B: 86 C: 138 D: 73 -- eliminated
Round #3:
A: 100 -- eliminated B: 159 C: 138
Round #4:
B: 259 -- ELECTED C: 138
B is, of course, the wrong choice, because A is the Condorcet winner. But try to prove it from the IRV vote counts.
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