6 MOORE v. HARPER Opinion of the Court stitution. ___ N. C., at ___, 886 S. E. 2d, at 446–448. Instead, the Court provided the General Assembly with the “opportunity to enact a new set of legislative and congressional redistricting plans, guided by federal law, the objective constraints in Article II, Sections 3 and 5 [of the North Carolina Constitution], and this opinion.” Id., at ___, 886 S. E. 2d, at 448. The Court did not revisit Harper I ’s conclusion that the Federal Elections Clause does not shield state legislatures from review by state courts for compliance with state constitutional provisions. ___ N. C., at ___, 886 S. E. 2d, at 422 (“The General Assembly exercises [redistricting] authority subject to the express limitations in our constitution and in federal law.”). We invited the parties to submit additional supplemental briefs addressing the effect of the Court’s decision on our jurisdiction. II Before turning to the merits, we must “determine as a threshold matter that we have jurisdiction.” Goodyear Atomic Corp. v. Miller, 486 U. S. 174, 178 (1988). The Constitution provides for our jurisdiction over “Cases” and “Controversies.” Art. III, §2. That constitutional requirement ensures that the parties before us retain a “personal stake” in the litigation. Baker v. Carr, 369 U. S. 186, 204 (1962). As “[a] corollary to this case-or-controversy requirement,” there must exist a dispute “at all stages of review, not merely at the time the complaint is filed.” Genesis HealthCare Corp. v. Symczyk, 569 U. S. 66, 71 (2013) (internal quotation marks omitted). Mootness doctrine “addresses whether an intervening circumstance has deprived the plaintiff of a personal stake in the outcome of the lawsuit.” West Virginia v. EPA, 597 U. S. ___, ___ (2022) (slip op., at 15) (alterations and internal quotation marks omitted). The North Carolina Supreme Court’s decision to withdraw Harper II and overrule Harper I does not moot this