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Single transferable vote with borda elimination: a new vote counting system

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posted on 2002-01-01, 00:00 authored by Christopher Geller
Dummett (1997) notes particular difficulties with single transferable vote (STV)
and proposes an alternative vote counting system called “Quota/Borda system”
(QBS) to remedy specific difficulties. I propose an alternative system,
structurally related to QBS, which accomplishes similar solutions but has some
significant differences. This alternative system is identical to STV in all aspects
except one. It eliminates candidates in reverse order of their Borda scores rather
than by their current ranking of first-place votes. I designate this system STV
with Borda elimination (STV-B).
STV-B and QBS share general features. They retain proportional representation
from STV. However, they differ from STV is two critical manners. First, both
permit some influence on candidate selection to occur between voting blocks.
Second, they are much more stable than STV when subjected to small changes in
voter preferences.
Outcomes from STV-B differ from QBS outcomes in two ways. Under STV-B, a
minority that shares some preferences may elect a candidate even if the minority
is not a solid coalition, as is required for minorities under QBS. Further, QBS
always selects Borda winners, either for a minority or overall. STV-B may reject
a Borda winner through emphasis on each voter’s most preferred candidates.

History

Series

School Working Paper - 2201

Pagination

1 - 20

Publisher

Deakin University, School of Economics

Place of publication

Geelong, Vic.

ISSN

1325-8435

ISBN-10

0730025578

Language

eng

Publication classification

CN.1 Other journal article

Copyright notice

2002, The Author

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