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

[Peter Zbornik]

Hello,

I am sending the proposal of M. Schulze as a reaction to my request.

Peter Z.

---------- Forwarded message ----------
From: Markus Schulze <markus.schulze at alumni.tu-berlin.de>
Date: Fri, Apr 30, 2010 at 9:46 PM
Subject: Re: Fwd: Proportional election method needed for the Czech Green
party - Council elections


Dear Peter Zbornik,

thank you for your interest in the Schulze method.

A very good website with many links is here:

http://en.wikipedia.org/wiki/Schulze_method

A Czech version of this article is here:

http://cs.wikipedia.org/wiki/Schulzova_metoda

A short version of the English article is here:

http://en.wikipedia.org/wiki/User:MarkusSchulze/Short_version_of_the_Schulze_method

A very good book on the Schulze method is here:

http://books.google.com/books?id=dccBaphP1G4C&pg=PA37

*********

The following organizations are using the Schulze
method for internal elections:

organization (number of eligible members)

Pirate Party of Sweden (50,000)
Wikimedia Foundation (26,000)
Debian (900)
Free Software Foundation Europe (900)
Squeak (500)
Software in the Public Interest (400)
Gentoo (300)
Graduate Student Organization at the State University of New York: Computer
Science (300)
KDE (150)
Ubuntu (150)

It is also used by a large number of organizations
with less than 100 eligible members each.

*********

Detailed descriptions of the Schulze STV method and
the Schulze proportional ranking method are here:

http://home.versanet.de/~chris1-schulze/schulze2.pdf

An implementation of the Schulze STV method is
"prog01.c" and "prog01.exe" of this file:

http://home.versanet.de/~chris1-schulze/schulze3.zip

An implementation of the Schulze proportional ranking
method is "prog02.c" and "prog02.exe" of that file.

*********

You wrote (30 April 2010):

> Three variants of the elections could be submitted.
> 1. The presidents and vice presidents are proportionally
> elected.

I recommend that the Schulze proportional ranking method
should be used. The candidate on the first place of this
ranking becomes the president. The candidate on the second
place becomes the vice president.

You wrote (30 April 2010):

> 2. The presidents and vice presidents need not to be
> proportionally elected (but the council needs to be).

I recommend that the Schulze ranking should be calculated
as defined here:

http://en.wikipedia.org/wiki/Schulze_method#Procedure

The candidate on the first place of this ranking becomes
the president. The candidate on the second place becomes
the vice president. The council is elected by the Schulze
STV method.

*********

You wrote (30 April 2010):

> 1. election of council members
> 2. election of delegates to regional and national rallies,
> where the regional and national council members are elected
> 3. election of candidates to the ballot - primary elections

I recommend the Schulze STV method for the council and
the delegates and the Schulze proportional ranking method
for the party list.

Markus Schulze

---
Follow up concerning rankings:

Dear Peter Zbornik,

a "proportional ranking" is a complete ranking of all
candidates such that, for every possible number M, the
first M candidates of this ranking are a proportional
image of the electorate. A proportional ranking method
can be used e.g. to create a party list; when a party
list is created, then we usually don't know in advance
how many candidates of this list will be elected.
Proportional ranking methods have also been proposed
by Otten and Rosenstiel:

http://www.votingmatters.org.uk/ISSUE9/P4.HTM
http://www.votingmatters.org.uk/ISSUE9/P5.HTM
http://www.votingmatters.org.uk/ISSUE12/P1.HTM

On the other side, when we only talk about a "ranking",
then we usually mean a "single-winner ranking". A
"single-winner ranking" tells us who should be
elected when only a single seat has to be filled.

Markus Schulze
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