6 COOPER v. HARRIS Opinion of the Court hearings, drafts, and revisions later, both chambers of the State’s General Assembly adopted the scheme the three men proposed. The new map (among other things) significantly altered both District 1 and District 12. The 2010 census had revealed District 1 to be substantially underpopulated: To comply with the Constitution’s one-person-one-vote principle, the State needed to place almost 100,000 new people within the district’s boundaries. See App. 2690; Evenwel v. Abbott, 578 U. S. ___, ___ (2016) (slip op., at 3) (explaining that “[s]tates must draw congressional districts with populations as close to perfect equality as possible”). Rucho, Lewis, and Hofeller chose to take most of those people from heavily black areas of Durham, requiring a finger-like extension of the district’s western line. See Appendix, infra. With that addition, District 1’s BVAP rose from 48.6% to 52.7%. See App. 312–313. District 12, for its part, had no need for significant total-population changes: It was overpopulated by fewer than 3,000 people out of over 730,000. See id., at 1150. Still, Rucho, Lewis, and Hofeller decided to reconfigure the district, further narrowing its already snakelike body while adding areas at either end—most relevantly here, in Guilford County. See Appendix, infra; App. 1164. Those changes appreciably shifted the racial composition of District 12: As the district gained some 35,000 African-Americans of voting age and lost some 50,000 whites of that age, its BVAP increased from 43.8% to 50.7%. See 2 Record 349 (Fourth Affidavit of Dan Frey, Exh. 5); id., at 416 (Exh. 11). Registered voters in the two districts (David Harris and Christine Bowser, here called “the plaintiffs”) brought this suit against North Carolina officials (collectively, “the State” or “North Carolina”), complaining of impermissible racial gerrymanders. After a bench trial, a three-judge District Court held both districts unconstitutional. All the judges agreed that racial considerations predominated in

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