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Given such a constant k, the proportionality relation ∝ with proportionality constant k between two sets A and B is the equivalence relation defined by {(,): =}. A direct proportionality can also be viewed as a linear equation in two variables with a y -intercept of 0 and a slope of k > 0, which corresponds to linear growth .
Neutral voting models try to minimize the number of parameters and, as an example of the nothing-up-my-sleeve principle. The most common such model is the impartial anonymous culture model (or Dirichlet model). These models assume voters assign each candidate a utility completely at random (from a uniform distribution).
The seat linkage compensatory mixed system often referred to as MMP originates in Germany, and was later adopted with modifications under the name of MMP in New Zealand.In Germany, where it was differentiated from a different compensatory mixed system it was always known as personalized proportional representation (PPR) (German: personalisiertes Verhältniswahlrecht).
The Gallagher index measures an electoral system's relative disproportionality between votes received and seats in a legislature. [1] [2] As such, it measures the difference between the percentage of votes each party gets and the percentage of seats each party gets in the resulting legislature, and it also measures this disproportionality from all parties collectively in any one given election.
Exact proportionality is never achieved under PR systems, except by chance. The use of electoral thresholds that are intended to limit the influence of small, extreme parties will reduce proportionality in list systems, and any insufficiency of leveling seats will further reduce proportionality in Mixed-member proportional or Additional-member systems.
In French municipal and regional elections, the D'Hondt method is used to attribute a number of council seats; however, a fixed proportion of them (50% for municipal elections, 25% for regional elections) is automatically given to the list with the greatest number of votes, to ensure that it has a working majority: this is called the "majority ...
A proportion is a mathematical statement expressing equality of two ratios. [1] [2]: =: a and d are called extremes, b and c are called means. Proportion can be written as =, where ratios are expressed as fractions.
Germany's mixed-member proportional system has a threshold of 5 percent of party-list votes for full proportional representation in the Bundestag in federal elections. However, this is not a strict barrier to entry: any party or independent who wins a constituency is entitled to that seat regardless if it has passed the threshold.