Lecture+5+-+Proportional+Representation+10-8.14.10

# Lecture+5+-+Proportional+Representation+10-8.14.10 -...

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Proportional Representation (PR) Again, what’s the intuition? % of votes will closely match % of seats 1

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Types of Allocation Rules What’s that mean? How you translate votes into seats 2 main approaches in PR Quota and Largest Remainders Divisors 2
Quota and Largest Remainders (LR) Simple quota and largest remainders (Hare) What does quota and largest remainders mean? In this case (Hare): Quota = V/M or =100/M Other cases: add #s (n) to M to determine quota Droop quota: (V/(M+1))+1 Hare is really proportional system Example YOU HAVE TO GET A CERTAIN PERCENTAGE OF THE VOTE M= DISTRICT MAGNITUDE DROOP QUOTA- IN TERMS OF PERCENT 3

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Divisors How’s this work? “Highest average” a = v/(s+n) Most well known type is d’Hondt rule a = v/(s+1) Example Sainte-Lague rule Divide v by 1, 3, 5,… What is effect of this relative to d’Hondt? MORE DISTRIBUTION-D GOT A SEAT– NOT UNDER D-HONDT – LARGER PARTIES HURT MORE UNDER SAINT LAGUE– BIGGER PARTIES HURT MORE Can use any divisor # But hurts large parties more as # increases MOST COMMON APPROACH TO ALLOCATING RULES UNDER PR - THE PARTY WITH THE LARGEST TOTAL GETS A SEAT_ EVERYTIME A PARTY RECEIVES A SEAT_ ITS’S TOTAL VOTE GETS DIVIDED BY IT’S DIVSOR - S-SEATS V- VOTE -SAINTE-LAGUE– DIVIDE BY 1, THEN 3, THEN 5 - SMALLER PARTIES WILL GET MORE SEATS UNDER SAINTE LAGUE 4
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## This note was uploaded on 11/01/2010 for the course POL pol140a taught by Professor Scheiner during the Fall '10 term at UC Davis.

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Lecture+5+-+Proportional+Representation+10-8.14.10 -...

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