[Election-Methods] RELEASE: Instant Runoff Voting (Chris Benham)

[Juho]

On Jun 22, 2008, at 6:52 , Kathy Dopp wrote:

> 5. Change the rules (or is the rule for your new voting method always
> "approve a number of top candidates equal to the total number of
> candidates minus one" for each voter?) and this time drop all except
> the top two choices of voters and give the remaining candidates one
> approval vote each.

In the examples voters seem to have range style personal utilities,  
based on which they then decide how to vote in Approval. The election  
method can thus be basic Approval (as Chris said).

The key assumption seems to be that the available set of candidates  
may influence on which ones will be approved (i.e. irrelevant  
alternatives may have an impact in Approval). For example, if there  
are only "good" candidates then the voter is likely to approve some  
of them and not approve some of them. If one adds some "bad"  
candidates to the candidate list then the voter possibly approves all  
the "good" candidates (although their utility values are still the  
same) and does not approve the "bad" candidates.

In the examples of Chris it was always quite clear which candidates  
were the better ones and which ones were the worse ones if the voter  
wants to split them in two groups (which is a sensible approach to  
vote in Approval).

Juho





		
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