Vote-ratio monotonicity

Property of apportionment methods

Vote-ratio, weight-ratio, or population-ratio monotonicity is a property of some apportionment methods. It says that if the entitlement for grows at a faster rate than , should not lose a seat to . More formally, if the ratio of votes or populations increases, then should not lose a seat while gains a seat. Apportionments violating this rule are called population paradoxes.

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