[EM] What should an ideal single-winner method achieve?

[Kristofer Munsterhjelm]

On 28/06/2019 00.41, fdpk69p6uq at snkmail.com wrote:
> On Thu, Jun 27, 2019 at 10:31 AM Toby Pereira wrote:
> 
>     Personally, the measure that makes most sense to me is to maximise
>     utility. But this doesn't automatically mean score voting (where a
>     score could simply be seen as a utility rating of a candidate), at
>     least in part because strategies that voters adopt might reduce its
>     effectiveness.
> 
> 
> Yep, maximizing utility is the correct answer (= finding the candidate
> that best represents the entire electorate), and the best way to get
> that kind of information is with rated ballots.
> 
> http://leastevil.blogspot.com/2012/03/tyranny-of-majority-weak-preferences.html
> 
> Condorcet ranked systems will also typically elect the Utilitarian
> Winner, but only because real-world voting behavior typically follows a
> spatial model with unimodal distribution.
> 
> https://www.sciencedirect.com/science/article/abs/pii/S0304406815000518
> 
> http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.504.3181&rep=rep1&type=pdf
> 
> Voter strategy on rated ballots is way overblown.
> 
> 1. It doesn't happen much in real elections.

Could you give some sources for use of rated ballots in actual elections
with a large electorate (e.g. not polls or surveys)? I don't think I've
seen any such, and it would be useful to have.