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| | US presidential electoral system |
 | | Of course, the majority vote decision system (the only monotone symmetric unbiased voting system) is votational: it is obtained by giving every elector the same weight, and choosing a threshold of half the total weight (the number of electors must be odd, remember). |
 | | This is also, typically, the system used in the US presidential election: each state represents a caste, each caste's decision system is the monotone symmetric unbiased voting system, and the overall decision system is a weighted votational system. |
 | | Proving that the system is not fair is an easy exercice in group theory (essentially, there are 933120 permutations of the first caste which preserve the decision system, and as many as 10368000 for the two other castes; so the castes cannot be permuted). |
| www.madore.org /~david/misc/us-voting.html (3807 words) |
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