[Election-Methods] Why monotonicity? (was: Smith +mono-add-top?)
jgilmour at globalnet.co.uk
Wed Jan 2 07:58:08 PST 2008
Jobst had written:
> > Also, it seems difficult to sell a method when you must admit that
> > advancing an option X may actually reduce X's winning probability...
> That doesn't seem to be a problem for the Instant Runoff campaign. ;-)
> Do you recall an example where it was difficult to sell a method due to
> its non-monotonicity?
This should be no surprise because, at least in public elections with hundreds, thousands or ten-of-thousands of voters in each
electoral district, non-monotonicity cannot be exploited either by the candidates or by the voters. It could be very different in
successive elections by IRV or STV-PR where the whole electorate was a small committee of, say, ten members - then it MIGHT be
possible for some voters to change their preference patterns to exploit the non-monotonicity to the benefit of their preferred
candidates. But monotonicity is a completely irrelevant criterion so far as public elections are concerned.
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1206 - Release Date: 01/01/2008 12:09
More information about the Election-Methods