Imperiali quota

The Imperiali quota or Imperiali pseudoquota is a formula used to calculate the number of votes needed to earn a seat, (or electoral quota) in single transferable vote or largest remainder elections. It is named after Belgian senator Pierre Imperiali.

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The Czech Republic is the only country that currently uses this allocation system, while Italy and Ecuador used it in the past.

It is possible for elections using the Imperiali quota to distribute more seats than there are vacancies to fill. If this occurs, the result needs to be recalculated with a higher quota (usually the Droop quota). If this does not happen, Imperiali distributes seats in a way that is a hybrid between majoritarian and proportional representation.

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