[EM] Proportional election method needed for the Czech Green party - Council elections

[Juho]

On Apr 27, 2010, at 3:01 AM, Jonathan Lundell wrote:

> On Apr 26, 2010, at 4:45 PM, Juho wrote:
>
>> Draft of a method:
>>
>> - collect ranked votes
>> - use Condorcet to determine P (Condorcet tends to elect a  
>> compromise candidate that all voters find reasonably good)
>> - use STV (using the same ballots) to elect the group of P and VPs  
>> (some special rules are needed to guarantee that the already named  
>> P will not be eliminated in the process but will be elected)
>> - use STV (using the same ballots) to elect members of the board  
>> (some special rules are needed to guarantee that the already named  
>> P and VPs will not be eliminated in the process but will be elected)
>>
>> One could elect P and VPs also later. In that case one could elect  
>> them from the members of the (already existing) board. Otherwise  
>> the process would be similar.
>
> This is a better approach, I think. Protecting already-elected  
> members and preserving proportionality is a subtle problem, and I  
> don't think there's a completely satisfactory solution available.  
> It's defensible for filling vacancies (below), but when it can be  
> avoided, it should be. (Unless someone has a great idea for this  
> kind of countback.)
>
> A burial strategy for P would have unfortunate effects for the STV  
> election, is a possible problem.

The STV election that follows may also reduce the incentives to try  
the burial strategy. That is because (in addition to burial not being  
a very efficient strategy in the first place) the benefit would be  
only to get a better P but not more voting power in the board, and  
because the modified vote could well contribute to the benefit of the  
competing sections in the proportional election.

Juho


>
>>
>> If one needs to elect new members to the board to replace old ones  
>> one could use the old ballots + special rules that will not  
>> eliminate any of the sitting board members.
>>
>> Does this work? Is this practical? Can this be considered to be  
>> understandable and well tested? Are there some strategic  
>> opportunities? Does this maintain proportionality as it should? Any  
>> conflicts with the expectations and needs of the Czech Green party?
>
>