Imagine a city with population of 400 voters (small circles) evenly distributed into blocks--20 by 20.
The city is trying to decide where to put the post office. Candidate locations are represented by the lettered circles on the map.
Distance: An easy--although undemocratic--way to choose the best location is simply to calculate the average distance from each voter to each candidate. The candidate with the lowest average distance is the best option.
Plurality: The most obvious democratic method to choose a location is to let voters vote. Each voter will make the obvious choice and vote for the candidate location that is closest. The color of each voter reflects the closest candidate.
- Condorcet Method - Wikipedia
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