The viability of partisan gerrymandering claims in Missouri is unclear, at least for challenges to legislative maps. In a 2012 challenge to the state’s congressional map, the Missouri Supreme Court, relying in part on pre-Rucho federal precedent questioning the justiciability of partisan gerrymandering claims, suggested that such claims are not justiciable under the state constitution. See Pearson v. Koster, 359 S.W.3d 35, 41–42 (Mo. 2012). However, since that decision, voters amended the Missouri Constitution to require state legislative maps to achieve “partisan fairness,” assuming the plans first satisfy certain other line-drawing requirements. Mo. Const. art. III, § 3(b)(5) (requiring state house maps to achieve partisan fairness); id. art. III, § 7(c) (applying Art. III, § 3(b)(5)’s anti-gerrymandering provision to state senate maps). Though the court has yet to adjudicate a partisan gerrymandering claim under the new provision, it has signaled an openness to doing so. Faatz v. Ashcroft, No. SC100277, — S.W.3d —-, 2024 WL 624316, at *10 (Mo. Feb. 14, 2024) (observing that when challenging the constitutionality of a legislative map, “the plaintiff must objectively prove that a constitutional requirement – population equality, compliance with federal law, contiguity, compactness (as much as may be), community preservation (to the extent possible), or partisan fairness and competitiveness (subject to the foregoing factors) – has not been met”).