Jameson's extension of Nicky's explainer on voting methods

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parker friedland

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Apr 28, 2018, 1:49:15 AM4/28/18
to The Center for Election Science
https://paretoman.github.io/ballot/newer.html

It's not perfect though. The single voter model on the sand box mode is useful for seeing what strategic voting looks like under each voting method. However, once you use the single voter model, you will notice that Jameson has only incorporated the different strategies into FPTP and the rated methods. In the normalized front runners strategy, voters give the two front runners max and min scores. However in ranked methods, this strategy should be to give the two front runners max and min rankings, because the strategy is about putting the maximum distance between the two candidates on your ballot. Giving the less preferred front runner a minimum ranking may not be very strategic under IRV, 85% of Australians still naively vote this way so including the ranking version of the front runner strategy seems pretty important.

Also, there should also be an optimum strategy option which uses the optimum best strategy under the selected voting method. Under approval and score, this strategy would be the threshold strategy (https://electology.org/score-voting-threshold-strategy) which is a strategy that deserves to be talked about on this page alongside the front-runner+ and front-runner- strategies.

And it would also be great if there was an option to display the VSE of the election result on the yee map instead of the color of the winner.

parker friedland

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Apr 28, 2018, 2:04:43 AM4/28/18
to The Center for Election Science
Also, another option for what to display on the yee map is the effectiveness of each strategy. This option would add one extra voter to the voter distribution and then measure the VSE that voter would receive if they voted using a specified strategy (or lack of strategy) minus the VSE they would receive if they used the same strategy (or lack of strategy) everybody else was using. Each location of the yee map would show this difference when the extra voter is placed in that part of the map. This is the best way to measure strategic incentives in a voting method, however, on the VSE map, you will get a lot of color denoting no change in VSE because a single voter rarely influences an election so for this option, the sim should have a setting for how much voting weight the extra voter has in comparison to every body else's voting weight so the added voter is able to influence the election more often.
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