McMann v. Richardson’s Empirical Analysis
1970
Citation profile
2,263 federal appellate · 416 district · 3,582 state decisions
How this case has been cited
Cited by 8,449 later decisions (128 by the Supreme Court) — most recently February 2026 · most notably Strickland v. Washington (1984), Schneckloth v. Bustamonte (1973)
2,263 federal appellate · 416 district · 3,582 state decisions — followed in 50 states
Later decisions citing this case, by decade. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Appellate journey
reviewedUnited States Ex Rel. Willie Richardson v. Daniel McMann Warden, Clinton Prison, Dannemora, New York (from Second Circuit Court of Appeals)
Relationships
Relies on Glasser v. United States · Wong Sun v. United States · Boykin v. Alabama · Johnson v. Zerbst · Gideon v. Wainwright
Cited together with Brady v. United States · Strickland v. Washington · Parker v. North Carolina · Tollett v. Henderson · Boykin v. Alabama
Most-quoted passages
The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 8,449 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“within the range of competence demanded of attorneys in criminal cases.”
315 later decisions quote this exact passage · from the majority“the right to counsel is the right to the effective assistance of counsel.”
85 later decisions quote this exact passage · from the dissent“A waiver is ordinarily an intentional relinquishment or abandonment of a known right or privilege.”
2 later decisions quote this exact passage · from the dissent
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.