Best Electoral System Test


The Best Electoral System Test (BEST) allows those involved in the debate on electoral system design to explore the characteristics of twelve common electoral systems in an interactive way. Users can set their priorities for 16 properties on a scale and immediately see a list of best matching electoral systems.

The choice of an electoral system is one of the most important institutional decisions for any democracy. New democracies must choose an electoral system, while in established democracies political crisis may lead to momentum for electoral system change or campaigners for political reform may attempt to put electoral system change onto the agenda.


Start BEST by setting your priorities in the left box below, click "Next" after each priority and follow how the list of best matching electoral systems develops on the right.

The yellow progress bar shows how many of the 16 priorities you have already set. You are free at any time to move back and adjust previously selected priorities to see how this affects the results.

Note that in most cases no system will be a perfect match, but the top scoring systems are the ones that come closest to your needs. Use the scrollbar on the right to see more systems and to what extent they match.

Please also note that if you would like to save your answers, you will be asked to provide your email address. This information will be sent to a third party (ZEF Software), which will send you an email containing a link to access your answers. Your answers are saved for your use only and your data will not be shared with other parties. Read the full ZEF terms of service.

  Open the Best Electoral System Test


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Disclaimer: Maps presented do not imply on the part of the Institute any judgement on the legal status of any territory or the endorsement of such boundaries, nor does the placement or size of any country or territory reflect the political view of International IDEA. Maps are used in order to add visual clarity to data.