Craig Layton wrote:
All true. However, assuming that most voters follow their party's
instructions, some problems in IRV are mitigated by preference swapping
deals, which generally help to minimise monotonicity violations.
I reply:
But there's no particular reason to believe that those deals would
work here. Of course they wouldn't be enforcable for that particular
election. The only incentive for a voter to follow the deal that
his party leaders made would be to protect his party's credibility
next time it makes a deal.
But even if those deals are made & kept in Australia, that doesn't
mean they'd work here, where the parties have earned less respect
from people, and where the political lineup is different.
And it doesn't speak well for a voting system if it needs deals
between voters to save it from its defects.
Mike Ossipoff
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