Lec 9 - Representation 2/10/09 Representation Definition:

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Representation 2/10/09
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Representation Definition: The extent to which citizens preferences are reflected in voting outcomes Three issues Proportionality/Disproportionality Median correspondence Malapportionment
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Disproportionality What do we learn from P&V about which features of the electoral system affect (dis)proportionality? Electoral formula (PR versus plurality) District magnitude (lower the M the greater the disproportionality) Thresholds (higher = greater disproportionality)
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EX: A B C D VS SS Blue 49 51 49 51 50% 50% Red 51 49 51 49 50% 50% A B C D VS SS Blue 49 49 49 51 49.5% 25% Red 51 51 51 49 50.5% 75% A B C D VS SS Blue 49 49 49 49 49% 0% Red 51 51 51 51 51% 100%
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Disproportionality Least squares index of disproportionality PR, L.R. Hare: Cost Rica = 4% PR, d’Hondt: Spain= 9%; Portugal = 4% SNTV: Japan = 6% SMD MRO: France = 10% SMD Alternative Vote: Australia = 9% SMD Plurality: India = 18%; Canada, New Zealand, UK =
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This note was uploaded on 04/07/2009 for the course POLISCI 389 taught by Professor Allenhicken during the Winter '09 term at University of Michigan.

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Lec 9 - Representation 2/10/09 Representation Definition:

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