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

[Raph Frank]

On Tue, Apr 27, 2010 at 1:54 AM, Juho <juho4880 at yahoo.co.uk> wrote:
> A fully separate P election would make the board less proportional - unless
> the elected P would have voting power only if he/she is already a member of
> the board.

I think if there are a reasonable number of members, then the
non-proportionality will only be slight.

I think both the President and VP should be centerists.  The President
should definitely be a centerist, so making the VP a non-centerist
gives that faction more power.

Also, by having 2 centerists on the council, you get a mix of
councilors who represent portions of the party and councilors who
represent the entire party.

I would suggest

Each voter casts a ranked ballot

1) The condorcet winner becomes President
2) The runner-up becomes Vice-President
3) Use PR-STV to elect the remainder of the council

This is simple and doesn't does require special rules to protect from
elimination.  The same ballots are just processed three times.

Also, the fact that the ballots are used three time should help with
strategy protection.

For by-elections, another option is to elect the condorcet winner.
However, ballots held by any of the other are not included.

This means that if you have 5 PR-STV seats, the ballots will be split
into 6 piles

A) Ballots held by councilor A
B) Ballots held by councilor B
C) Ballots held by councilor C
D) Ballots held by councilor D
E) Ballots held by councilor E
F) Ballots held by none of the candidates

If councilor C decides to resign, then you work out the condorcet
winner based on the ballots in pile C and F.

Also, if the President resigns, the VP becomes President.  Vacancies
in the VP office are filled by the condorcet winner based on all the
ballots.  A Councilor must resign his seat to become President or VP,
so that triggers another vacancy that has to be filled.