[EM] PR-STV with approval based elimination

[Raph Frank]

On Fri, May 1, 2009 at 6:53 PM, Kristofer Munsterhjelm
<km-elmet at broadpark.no> wrote:
> If there are two seats and the "left" and "right" factions are of equal
> size, and both have respective centrists, the outcome should have a "left
> centrist" (which is close to the median voter of the left faction) and a
> "right centrist" (which is close to the median voter of the right faction).
> That there is one member of the left group and one member of the right group
> in the outcome is explicit proportional representation, but that each
> representative is a centrist within his group is compromise.

However, standard PR-STV will effectively decide which left candidate
wins using IRV, which isn't a centrist finding method.

What about instead of making it general, voters are allowed to vote
for more than 1 candidate as first choice.

All first choice candidates are considered approved for calculating elimination.

Otherwise, the vote gets split equally between all remaining first
choice candidates.

Another issue is if the approval votes should also be rescaled once a
candidate is elected.