Further concision for proportional_representation.md

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# Proportional representation
Proportional representation refers to the fair and accurate translation of citizen and party makeup into the legislature. If *x* percent of voters support a certain party, then *x* percent of the legislature should mirror that party. Proportional representation voting systems are comprised of three main variations: the party list system, the mixed-member system, and the single transferable vote (or choice voting).
Proportional representation (PR) refers to the fair and accurate translation of citizen and party makeup into the legislature. If *x* percent of voters support a certain party, then *x* percent of the legislature should mirror that party. Proportional representation voting systems are comprised of three main variations: the party list system, the mixed-member system, and the single transferable vote (or choice voting).
**Input:** multimember districts, voting base, intentional (often low) exclusion threshold
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### Sensitivities
* Fair and accurate representation for multiple parties, leading to more nuanced policies
* More accurate representation for marginalized groups
* Votes are more meaningful; voting for a particular candidate doesn't "take away" from another
* Representation for multiple parties, leading to more nuanced policies
* Representation for marginalized groups
* Potential for smaller parties to gain representation
* Research demonstrates higher voter turnout in PR systems
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### Tools
* Various formulas exist to calculate the allocated number of seats based on election results, including the DHondt Method or Jefferson method, Hare method, and German method.
* Each variation of the PR system has a different ballot design.
* Various formulas exist to calculate the allocated number of seats based on election results, including the DHondt Method or Jefferson method, Hare method, and German method
* The ACE Project provides extensive information on PR systems and the variations of this system with example ballots and formulas
## Further resources