User:RodCrosby/QPR2: Difference between revisions
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===Regularity of swing===
How does PR squared measure up against FPTP's fabled ability to ''<nowiki/>'throw the rascals out'''? Unlike pure PR where only about six seats would switch between Labour and Conservative for every 1% swing - inviting deadlock, or preferential systems such as AV and STV where unpopular parties may be crushed owing to those systems' invitation to 'gang-up' against them, PR-Squared would operate with almost the regular, quiet precision of Big Ben.
Under FPTP, on average since 1974, a net 13.1 seats have changed hands between the two main parties for every unit of swing, although it has varied widely, and been in long-term decline in the UK. In 2001 each unit of swing "swung" just 3 net seats (fewer than PR would deliver!), whereas in 1992 and 2010 it swung around 20.
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