Rucho consolidated two challenges to congressional maps in North Carolina and Maryland. In North Carolina, after a racial gerrymander was struck down, the Republican-controlled legislature adopted a 2016 remedial congressional plan that, by its own designers' admission, sought to produce a 10–3 Republican advantage in a closely divided state. A key legislator stated on the record that the intent was to create a 10–3 map because an 11–2 split was not feasible. Plaintiffs (voters and organizations) presented expert analyses—such as partisan symmetry metrics, efficiency gap, mean–median differences, and computer simulations—to show that the map systematically and durably advantaged Republicans relative to their statewide vote share. In Maryland, Democratic officials redrew the Sixth Congressional District to convert a Republican-leaning seat into a Democratic one, moving hundreds of thousands of voters and targeting Republican voters, as confirmed by deposition testimony from then-Governor O'Malley and mapmakers. Three-judge federal district courts in both cases found the maps unconstitutional under theories based on the Equal Protection Clause, the First Amendment, and Article I (Elections Clause and Qualifications Clause), and ordered remedial maps. The state defendants appealed directly to the Supreme Court.
Do claims of partisan gerrymandering present justiciable controversies under the Constitution that federal courts can resolve, or are they nonjusticiable political questions lacking judicially discoverable and manageable standards?
Partisan gerrymandering claims are nonjusticiable political questions in federal court. The Constitution assigns redistricting principally to the States, with oversight by Congress under the Elections Clause (U.S. Const. art. I, § 4), and provides no judicially discoverable and manageable standard for determining when partisan influence in districting is excessive. Absent such a standard rooted in constitutional text, history, or tradition, federal courts lack authority under Article III to adjudicate these claims. See Baker v. Carr (political question factors), Vieth v. Jubelirer (plurality finding no manageable standard), and Gill v. Whitford (not reaching merits).
No. Partisan gerrymandering claims are not justiciable in federal court. The Supreme Court reversed the lower courts and remanded with instructions to dismiss for lack of jurisdiction because such claims present political questions beyond the competence of the federal judiciary.
Chief Justice Roberts, writing for a 5–4 majority, acknowledged that extreme partisan gerrymanders are at odds with democratic principles but concluded that the Constitution does not provide a workable legal standard to distinguish permissible from impermissible levels of partisan intent or effect. Applying the political question framework from Baker v. Carr, the Court emphasized two factors: (1) a lack of judicially discoverable and manageable standards, and (2) a textually demonstrable commitment to a coordinate branch. The Court reasoned that, unlike one-person-one-vote cases (which rely on population equality) or racial gerrymandering claims (which use race as an identifiable predominant factor), partisan fairness lacks a judicially administrable baseline; the Constitution neither requires proportional representation nor furnishes a metric for when partisan considerations become unconstitutional. The Court reviewed the past decades of fractured jurisprudence. In Davis v. Bandemer, the Court nominally allowed partisan gerrymandering claims but never agreed on a standard. In Vieth, a plurality declared the claims nonjusticiable, while Justice Kennedy left open the possibility of a future standard—one that never materialized. Gill v. Whitford avoided the merits on standing grounds. The Rucho majority considered and rejected proposed metrics such as the efficiency gap and partisan symmetry, finding them policy-laden and not grounded in constitutional text or historical practice. The First Amendment retaliation theory also failed; the Court viewed it as a repackaged equal protection claim that lacked a manageable standard for determining when ordinary political considerations cross a constitutional line. The majority highlighted remedial and institutional concerns: federal court supervision of map-drawing would draw judges into inherently political disputes across thousands of districts, require them to decide acceptable degrees of partisan effect without constitutional benchmarks, and risk entrenching controversial conceptions like proportional representation. By contrast, the Constitution's structure points to political solutions: state reforms (e.g., independent commissions, state constitutional provisions) and federal legislation under the Elections Clause. The Court thus concluded that federal courts must refrain, leaving correction to the political process and to state-law constraints. Justice Kagan, joined by three Justices, dissented, arguing that workable standards exist (including intent-plus-effects tests using robust metrics) and that the Court abdicated its duty to remedy a constitutional wrong that entrenches minority rule. The majority, however, maintained that while the problem is real, the Constitution does not authorize federal courts to solve it.
Rucho definitively closes the federal courthouse to partisan gerrymandering claims, cementing the political question doctrine's application to structural election disputes involving partisan advantage. It channels litigation and reform to state courts (under state constitutions, which often include free and fair elections clauses) and to institutional redesign (independent redistricting commissions) and preserves federal judicial review for other redistricting claims—such as one-person-one-vote, racial gerrymandering under the Equal Protection Clause, and Voting Rights Act claims. For law students, the case illustrates limits on judicial power, the importance of manageable standards, and federalism-based avenues for addressing democratic dysfunction.
Rucho v. Common Cause marks a decisive turn in the Supreme Court's approach to democratic process cases: rather than experimenting with complex standards to police partisan excess in redistricting, the Court concluded that the Constitution offers no judicially manageable rule for federal courts to apply. As a result, even extreme partisan entrenchment is not remediable in federal court on a partisan gerrymandering theory.