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Lamone v. O. John Benisek

Updated Sep 3, 2026

In brief

Federal courts cannot decide whether electoral maps are unconstitutional partisan gerrymanders.

Where it stands
Decided

Decided 5-4 · June 27, 2019 · Opinion by Chief Justice Roberts

What it’s about
The Court held, 5–4, that federal courts cannot decide claims that electoral district maps are unconstitutional partisan gerrymanders because those claims raise political questions without a workable legal standard.
Who it affects
Voters challenging a legislative map as unfairly favoring one political party cannot pursue that claim in federal court. Maryland election officials won this case, and the lower court decisions against them no longer stand.

Summary: written with AI from the case record.

Illustration for Linda H. Lamone, et al., Appellants v. O. John Benisek, et al.
Conceptual illustration · AI-generated

What it's about

The Court vacated the lower court’s rulings for the Maryland voters; Maryland election officials prevailed.

The case addressed the difficult question of when political influence over district lines has gone too far.

Question presented

Whether federal courts have the authority to decide claims of partisan gerrymandering.

What the Court decided

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 5joined the Court's opinion
  1. Robertswrote the opinion
  2. Thomas
  3. Alito
  4. Kavanaugh
  5. Gorsuch
Dissenting · 4disagreed with the result
  1. Kaganwrote the dissent
  2. Ginsburg
  3. Breyer
  4. Sotomayor
5 justices joined the judgment, 4 dissented.

From the opinions

““Partisan gerrymandering claims present political questions beyond the reach of the federal courts.””

— Chief Justice John Roberts(majority)

What's next

The Maryland lower court rulings were vacated and the case was remanded. Maryland election officials prevail, while federal courts must dismiss partisan-gerrymandering claims as political questions.

Documents

4

Docket activity

12
  • New analysis added

    Sep 3, 2026 · Court records

  • AI analysis generated: Case Briefing

    Sep 3, 2026 · Generated

  • New analysis added

    Sep 3, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Sep 3, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Sep 3, 2026 · Generated

Show 7 more
  • Case data updated: summary, question_presented, generation_metadata

    Sep 3, 2026 · Court records

  • New analysis added

    Jul 2, 2026 · Court records

  • New analysis added

    Jul 2, 2026 · Court records

  • Opinion added: opinion

    Jun 27, 2019 · Court records

  • Audio Recording added: Oral Arguments - Lamone

    Mar 29, 2019 · Court records

  • Brief added: Jurisdictional Statement

    Dec 3, 2018 · Court records

  • Brief added: Questions Presented

    Court records

More questions

3
What did the Supreme Court rule in Lamone v. Benisek?
The Court said federal courts cannot decide claims that electoral maps are unconstitutional partisan gerrymanders. It vacated rulings that had favored Maryland voters.
Who won Lamone v. Benisek?
Maryland election officials won. The Court removed the lower court rulings against them.
What happens next after Lamone v. Benisek?
The case returns to the lower court after the Supreme Court's order. Federal courts must treat partisan-gerrymandering claims as political questions they cannot decide.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Sep 3, 2026Methodology

Court records and filings

Reporting and analysis