[EM] Filling Unscheduled Vacancies With PR

[Peter Maxwell]

The Proportional Representation Society of Australia prefers 
"countback" -  recounting the original ballots.  From
http://www.prsa.org.au/viclc/submission/sub/node14.html :

> There are two models of countback used in Australia.  The model used
> in Western Australia since 1987, where all ballots cast in the original
> election are re-counted, and the Hare-Clark model used in Tasmania
> since 1918 and the ACT since 1995, where only the quota of the
> vacating candidate is re-counted.  Both are acceptable, but the PRSA,
> and informed opinions of senior electoral officers in Tasmania, the
> ACT and Western Australia, favour Hare-Clark.

The only argument against countback I have ever come across is a 
trivial one: the cost of storing ballots.

  -- Peter Maxwell