Skip to main content

Shapiro v. McManus

Updated Oct 18, 2026

In brief

The challengers won the right to present their claim to a three-judge court, but the Supreme Court did not decide whether the map is lawful.

Where it stands
Decided

Decided 9-0 · December 8, 2015 · Opinion by Justice Scalia

What it’s about
Stephen Shapiro and other Maryland citizens challenged a congressional redistricting plan, but a single district judge dismissed their claim without convening a three-judge panel.
Who it affects
The Maryland challengers are entitled to have their claim heard by a three-judge court, rather than have one judge dismiss it.

Summary: written with AI from the case record.

Illustration for Stephen M. Shapiro v. David J. McManus, Jr., Chairman, Maryland State Board of Elections
Conceptual illustration · AI-generated

What it's about

The Supreme Court overturned the dismissal and sent the case back to the lower court (reversed and remanded), ruling that a claim covered by the Three-Judge Court Act must be heard by a three-judge panel.

A federal law, the Three-Judge Court Act, provides for three-judge courts in certain cases.

Question presented

May a single-judge district court determine that a claim governed by the Three-Judge Court Act need not be heard by a three-judge panel, not because the claim is insubstantial, but because the complaint did not state a claim under Federal Rule of Civil Procedure 12(b)(6)?

What the Court decided

Holding

Section 2284 entitles petitioners to make their case before a three-judge court. 140, reversed and remanded.

Result
Reversed

The Court's reasoning

The Court said the federal law at issue entitles the challengers to make their case before a three-judge court.

The vote

  • Joined the judgment
  • Wrote an opinion
Majority · 9joined the Court's opinion
  1. Breyer
  2. Kagan
  3. Thomas
  4. Scaliawrote the opinion
  5. Kennedy
  6. Ginsburg
  7. Sotomayor
  8. Roberts
  9. Alito
9 justices joined the judgment.

What's next

The case returns to the lower courts for a three-judge court to hear the challengers’ claim.

Documents

1

Docket activity

9
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Oct 18, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Oct 18, 2026 · Generated

Show 4 more
  • AI analysis generated: Decision Record

    Oct 18, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 18, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 17, 2026 · Court records

  • Opinion added: Shapiro

    Dec 8, 2015 · Court records

More questions

1
Did the Supreme Court strike down Maryland’s map?
No. It ruled only that the challengers were entitled to make their case before a three-judge court.

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 Oct 18, 2026Methodology

Court records and filings

Reporting and analysis