Refinement to Proposal

Mike Ositoff ntk at
Mon Jul 27 16:43:27 PDT 1998

Building the party list by successive STV elections, with increasing
N, definitely seems the way to make a list that will give the
most proportional results regardless of how many seats the party

House nonmonotonicity, though it can occur, probably won't happen
often, and, if that's the case, then what will happen is that
when the N-candidate STV count is done, there will be 1 new
candidate among those N, and he will be the Nth candidate on
the list.

I was previously suggesting to always give the already chosen
candidates precedence--the N-1 candidates would keep their
list positions even if they weren't all among the N current
STV winners.

But here's a better precedence rule:

If N is less than the current number of seats the party has,
then the N candidate STV count takes precedence, and its N winners
are the list members so far. Any new ones would be ordered, after
the positions of the existing list candidates, by the use of a
single-winner method. Either most 1st place votes, or a good
single-winner method repeated for each next rank position.

If N is equal to or greater than the current number of seats that
the party has, then the candidates already in the list take
precedence, when house nonmonotonicity occurs. They keep their
positions, and a single-winner method is used to determine which
new candidate among the N shall be the Nth candidate in the list.


Those precedence rules recognize that your current number of
parliamentary seats is the most likely number for the coming


Mike Ossipoff

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