Proportional representation (PR) characterizes electoral systems (voting system) in which divisions in an electorate are reflected proportionately in the elected body. If n% of the electorate support a particular political party or set of candidates as their favorite, then roughly n% of seats will be won by that party or those candidates. The essence of such systems is that all votes contribute to the result—not just a plurality, or a bare majority. The most prevalent forms of proportional representation all require the use of multiple-member voting districts (also called super-districts), as it is not possible to fill a single seat in a proportional manner. In fact, PR systems that achieve the highest levels of proportionality tend to include districts with large numbers of seats. https://en.wikipedia.org/wiki/Proportional_representation
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