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

[Raph Frank]

On Wed, Apr 28, 2010 at 4:52 PM, Jonathan Lundell <jlundell at pobox.com> wrote:
> This is, I think, a decent general solution to ordering a set of STV
> winners: re-count, with only the current winners eligible, for successively
> smaller numbers of seats.

Yeah, it is reasonable.

The fundamental problem is that if you use PR-STV to elect N
candidates from N+1 candidates, then one of the factions that was
represented ends up not represented at all.  This isn't so big an
issue when N is large, but it becomes a larger problem as N gets
smaller.

For example, if the voters were arranged as a circle, and each
candidate represents a 120 degree sector, then picking any 2 of them
is not ideal.

Something like CPO-STV might help, but the problem seems fundamental.