Cite as: 602 U. S. ____ (2024) 11 KAGAN, J., dissenting The majority’s new evidentiary rule is meant to scuttle gerrymandering cases. Odd that the majority fails to mention a seemingly pertinent fact: Cooper expressly rejected a similar demand that a plaintiff alleging a gerrymander submit an alternative map. In that case, North Carolina argued that “[w]hen race and politics are competing explanations of a district’s lines,” the challenger must introduce “an alternative map that achieves the legislature’s political objectives while improving racial balance.” 581 U. S., at 317 (alterations omitted). The Cooper dissent agreed. See id., at 332–337. The Cooper Court did not. See id., at 317–322. The Court freely acknowledged that such a map could be good evidence of a racial gerrymander. See id., at 317. So too, it recognized “as a practical matter” that a plaintiff with an otherwise weak case would not prevail without a map. Id., at 319. 1 But we could not have been more adamant in rebuffing the State’s proposed requirement. “[I]n no area of our equal protection law,” we reasoned, “have we forced plaintiffs to submit one particular form of proof.” Ibid. And we were not about to start. A “plaintiff ’s task” in a gerrymander case, we stated, “is simply to persuade the trial court— without any special evidentiary prerequisite”—that race was the predominant factor in redistricting voters. Id., at 318. Like all other submissions in a gerrymandering case— —————— 1 The example Cooper gave was Easley v. Cromartie, 532 U. S. 234 (2001). The plaintiffs’ direct evidence there, Cooper noted, was “meager” and “weak.” 581 U. S., at 321–322. Cromartie described it as saying “little or nothing” about the role race had played in drawing district lines. 532 U. S., at 253. And the additional, circumstantial evidence did not fill the gap, because it too “offer[ed] little insight” into the basis of the legislature’s mapmaking. Id., at 248. In that evidentiary vacuum, Cooper explained, an alternative map was needed to “carry the day.” 581 U. S., at 322. Not because, as today’s majority decides, there is something special about that form of evidence. Just because in Cromartie there was basically nothing else. As I’ll soon show, that is far from true in this case. See infra, at 15–33.

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