A district . The boldface sentences confirm my understanding of how PVI works. As younger people continue to move to cities for jobs in technology and other sectors, this trend appears likely to continue. Another method is to compare to results up and down the ballot. I think Charlie Cook and the Queen will continue to use their measures for the rest of their employed lives. of Constitutional Law, The PVI is designed to provide a quick overall assessment of generic partisan strength. More useful is how a partys candidate performs compared to party registration (where applicable). [4] The most Republican district in the nation is Alabama's4th (R+33), represented by Republican Robert Aderholt. [6], Inconsistencies among vote data aggregation processes and redistricting cycles can present challenges in determining the PVI. More than 50 percent of voters in the state supported Donald Trump in 2016, and the trend appears likely to continue. Professor of Law at USC Gould School of LawView posts , Cheap Speech: How Disinformation Poisons Our Politics--and How to Cure It (Yale University Press, 2022) Although, us also using PVI only is giving it undeserved credit. The Cook Political Report's Partisan Voter Index (PVI) is a measurement tool that scores each congressional district based on how strongly it leans toward one political party. Cook provided the following explanation of a sample PVI in its 2017 PVI summary: !function(){"use strict";window.addEventListener("message",(function(e){if(void 0!==e.data["datawrapper-height"]){var t=document.querySelectorAll("iframe");for(var a in e.data["datawrapper-height"])for(var r=0;r