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1 Technical Appendix to Growing Racial Disparities in Voter Turnout, 2008-2022 1 (2024)

handle is hein.civil/tcnlax0001 and id is 1 raw text is: Technical Appendix to Growing Racial Disparities in Voter Turnout, 2008-2022* Kevin Morris and Coryn Grange Brennan Center for Justice at NYU School of Law Contents A.1 Snapshot Dates 2 A.2 Alternative Racial Predictions 4 A.3 Errors Associated with BISG and Socioeconomic Characteristics 6 A.4 Alternative Source for Self-Identification in 2014, 2016 7 A.5 Discussion of Entropy Balancing 9 A.6 Alternative Modeling Approaches 10 A.6.1 Primary Models from Report . . . . . . . . . . . . . . . . . . . . . . . . . 12 A.6.2 State-Level Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 A.6.3 County-Level Models, Without Entropy Balancing . . . . . . . . . . . . . . 13 A.6.4 Entropy Balancing, Base Period Covariates Averaged . . . . . . . . . . . . 15 A.6.5 Entropy Balancing, Parallel Trends Conditional on Covariates . . . . . . . 16 A.6.6 Entropy Balancing, Level Differences Averaged Across Pretreatment Period 19 A.6.7 Alternative BISG Estimations . . . . . . . . . . . . . . . . . . . . . . . . . 23 A.6.8 Limiting the Analysis to the Former Confederacy . . . . . . . . . . . . . . 25 A.6.9 Reclassifying New Hampshire as Treated . . . . . . . . . . . . . . . . . . 25 A.6.10 Recoding Uncovered Counties in Partially Covered States . . . . . . . . . . 27 A.6.11 Weighting Counties by Population . . . . . . . . . . . . . . . . . . . . . . 28 A.6.12 Genetic Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 *The full report can be found here: https://www.brennancenter.org/our-work/research-reports/ growing-racial-disparities-voter-turnout-2008-2022. 1