Quote

"There is no "best" electoral system suitable to all and no universally recognized standard. The choice of electoral system needs to be made with desired goals in mind. The effects which different kinds of electoral system can promote are ultimately contextual and depend on the specific cleavages and divisions within any given society. While some electoral system are certainly more likely to produce, say, more proportional electoral results than others, the overall consequences of electoral systems are highly context-specific."

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International IDEA: International Electoral Standards: Guidelines for Reviewing the Legal Framework of Elections, p. 23

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International Electoral Standards: Guidelines for Reviewing the Legal Framework of Elections

English

Summaries

While no electoral system is prescribed by international law, the system chosen must be consistent with international obligations and should be clearly stated in law.