Introduction Recently, computers have become crucial to the process - PowerPoint PPT Presentation

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Introduction Recently, computers have become crucial to the process of partisan gerrymandering Quantitative metrics have been proposed to measure gerrymandering The outlier metric determines if a congressional map is gerrymandered by comparing

Introduction Recently, computers have become crucial to the process of partisan gerrymandering Quantitative metrics have been proposed to measure gerrymandering The outlier metric determines if a congressional map is gerrymandered by comparing its seat count to the distribution of seat counts based on randomly sampled maps on that voter preference set Retrieved from: Herschlag et al Brubach, Srinivasan, Zhao Meddling Metrics 1 / 4
Heuristic and Model We model the voting process as a game where parties control their voters and order them to vote untruthfully to circumvent the outlier metric Using a three-by-three grid graph, we establish conditions sufficient for strategizing and expand a heuristic to five-by-five grid graphs We find that our heuristic is reliable in enabling parties to strategize and vote untruthfully to circumvent the outlier metric Brubach, Srinivasan, Zhao Meddling Metrics 2 / 4
Further Applications We modify our model and heuristic to apply it to real election data in North Carolina and find a possibility of strategizing to achieve similar circumvention results as on the five-by-five grid We also examine questions of proportionality and individual harm Brubach, Srinivasan, Zhao Meddling Metrics 3 / 4
Conclusions and Recommendations We show that careful scrutiny should be given to any measurement which uses past voter behavior A more realistic model for influencing voters, election security/tampering Add noise or change the number of voting rounds More sophisticated algorithms and computation Consider how gerrymandering metrics that use past voter data can be less susceptible to strategizing Brubach, Srinivasan, Zhao Meddling Metrics 4 / 4

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