<div dir="ltr"><div>I had an idea to test how much particular methods enforce two party domination.</div>
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<div>Start out with some voters, each of them has some utility for a certain candidate. Utility = reproduction in this case. So voters with a positive utility of the outcome will reproduce and voters with a negative utility of the outcome will die off. The candidate generator will also be fairly cloney so that clone positive methods don't take over. Each voter has a tag that is heritable. You can measure the trend towards two party domination by counting the number of voters with a particular tag and graphing it. </div>
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<div>There are some things to be sorted out such as how to prevent population explosion after two party domination and how to balance utilities so that voters who like everything don't show up.</div>
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<div>Complete non-sequitur but still a point I don't entirely understand:</div>
<div>IRV, FPTP and Contingent Vote all lead to two party domination according to Duverger's law.</div>
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<div>Why doesn't France's Two Round System lead to the same result? Pretend you have a ballot consisting of rank ordering and a separate FPTP checkbox, would this similarly avoid two party domination?</div></div>