Dave Ketchum > Sent: Saturday, October 04, 2008 7:37 PM
>
> Plurality does fine with two candidates, or with one obvious
> winner over others.
I am horrified to read this statement on this list. It is completely and
utterly untrue. Plurality fails on almost every count
even when there are only two candidates in each electoral district and even
when only two parties contest the elections.
Granted, if there are only two candidates within each district the plurality
winner must have a majority of the votes within the
district. But there the "satisfactory" performance of plurality ends. Almost
half the voters can be left without representation -
and that happens in large numbers of districts, even when not in all.
Plurality distorts the voters' wishes and exaggerates swings
in party support, even when there are only two parties. Just look at these
results from two successive general elections in
Jamaica:
1976 1976 1980 19080
%votes seats %votes seats
PNP 57 47 43 9
JLP 43 13 57 51
Even if the electoral districts have nearly equal electorates, differential
turnout can mean that plurality puts the "wrong" party
in power.
No, plurality is a rotten voting system and it is a pernicious myth that it
works OK when there are only two parties or only two
contesting candidates in each electoral district. We British who spread this
appalling voting system around the world owe the
electors of many countries an almighty apology for this dreadful legacy!!
James
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