Schlup v. Delo
The Court ruled that death-row inmates raising new claims of factual innocence to get a second look at barred constitutional claims only need to show it's more likely than not that no reasonable juror would have convicted them — not the tougher 'clear and convincing evidence' standard used for claims about wrongful death sentences.
The decision sends Lloyd Schlup's case back for reconsideration under this easier standard, and more broadly sets the rule courts must use nationwide whenever a death-row prisoner says new evidence shows a jury got the guilt question wrong.
How it got here: A federal trial court dismissed Schlup's second habeas petition without a hearing; the Eighth Circuit affirmed using a strict standard; the Supreme Court agreed to decide which standard applied.
The Case in Depth
What happened
Lloyd Schlup, a Missouri inmate, was convicted and sentenced to death for helping kill another prisoner during a 1984 attack. Years after his conviction, he obtained a videotape analysis and new witness statements — including from a guard who said he called for help almost immediately — that he argued showed he could not have taken part in the killing and time to reach the dining hall as recorded on camera.
The question before the Court
When a death-row inmate says new evidence proves he's innocent, but he missed his chance to raise his constitutional claims earlier, how strong does that evidence have to be before a court will even look at his claims?
The Court's answer
Neither the toughest nor the easiest option — the Court chose the more lenient of the two competing tests. It ruled that a death-row inmate who missed his chance to raise constitutional claims earlier can still get those claims heard if he shows it's more likely than not that no reasonable juror, seeing all the evidence including what's new, would have convicted him. That's the standard from Murray v. Carrier, not the stricter "clear and convincing evidence" standard from Sawyer v. Whitley, which the Court said was designed for claims about wrongful death sentences, not claims of innocence of the crime itself.
The Court explained that because claims of true innocence are rare and uniquely serious, and because Schlup's claim comes paired with an assertion that his trial itself was unfair, he shouldn't have to meet as demanding a bar as someone attacking only his sentence. Since the lower courts had used the wrong, stricter standard, the Court sent the case back for the evidence to be reevaluated under the correct one.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Death-row inmates with new evidence of innocence — new witnesses, better timelines, forensic findings — now have a meaningfully easier path to get a federal court to actually examine claims like ineffective counsel or withheld evidence. Prosecutors and courts must apply a more probing, less rigid test before shutting the courthouse door on second habeas petitions.
What changes now
The Supreme Court vacated the Eighth Circuit's decision and sent the case back with instructions to remand to the district court, which must now weigh Schlup's new evidence under the more lenient Carrier standard, potentially including an evidentiary hearing where witnesses could be cross-examined. This is a final ruling on which legal standard applies, but it does not resolve whether Schlup is actually innocent or whether his underlying constitutional claims succeed — those questions return to the lower courts.
What this does not decide
The Court did not decide whether Schlup is actually innocent, nor did it rule on the merits of his ineffective-assistance-of-counsel or withheld-evidence claims. It also left open, per Justice O'Connor's concurrence, whether the miscarriage-of-justice exception is a discretionary remedy or what standard of appellate review applies to such rulings.
Concurrences and dissents
Concurrence — Justice O'Connor
Justice O'Connor joined the majority in full but wrote separately to clarify the ruling's limits. She emphasized the new standard is higher than the standard for legal prejudice and different from the Jackson v. Virginia sufficiency-of-evidence test. She also stressed the Court did not decide whether the miscarriage-of-justice exception is discretionary or what standard of appellate review governs it.
Dissent — Justice Rehnquist
“But this is a classic mixing of apples and oranges.”Criticizing the majority's blended legal-and-factual formulation of the actual-innocence standard.
Chief Justice Rehnquist argued the Court should have applied the stricter Sawyer standard to innocence-of-the-crime claims too, for simplicity and to better balance finality and federalism interests. He also criticized the majority's version of the Carrier standard as a confusing 'mixing of apples and oranges,' arguing it should instead be modeled on a modified Jackson v. Virginia sufficiency test with structured discretion for evidentiary hearings.
Dissent — Justice Scalia
Justice Scalia argued the entire miscarriage-of-justice exception for successive habeas petitions lacks grounding in the actual habeas statute, 28 U.S.C. § 2244(b), which he read as giving district courts discretion to dismiss successive petitions without any judge-made 'ends of justice' override. He would have deferred to the lower courts' discretion and affirmed without creating a mandatory innocence gateway.
How the Court got there
The legal reasoning, step by step
- The Court distinguished Schlup's claim from the different kind of innocence claim in Herrera v. Collins: Schlup wasn't arguing that executing an innocent person is itself unconstitutional, but that his innocence evidence should let him get past a procedural bar so a court can hear his separate claims that his trial was unfair (ineffective lawyer, hidden evidence).
- Because Schlup's claim, unlike Herrera's, comes bundled with an assertion that his trial itself was tainted by constitutional error, the Court reasoned his evidence of innocence didn't need to be as overwhelming — it only needs to undermine confidence in the trial's fairness, not conclusively prove innocence on its own.
- The Court then had to choose between two competing tests from its own precedent: the tougher 'clear and convincing evidence' test from Sawyer v. Whitley (built for claims about wrongful death sentences) and the more lenient 'probably resulted in conviction of an innocent person' test from Murray v. Carrier.
- Weighing the systemic costs of allowing repeat habeas petitions against the risk of executing an innocent person, the Court concluded that claims of actual innocence of the crime itself are rare and carry a uniquely serious injustice, so the lower, Carrier standard should govern rather than Sawyer's stricter one.
- Applying the Carrier standard, the Court explained a petitioner must show it is more likely than not that no reasonable juror, following the reasonable-doubt instruction, would have convicted him in light of all the evidence — old and new — a standard distinct from and slightly more demanding than the ordinary test for legal prejudice, but less demanding than Sawyer's clear-and-convincing rule.
- Because the lower courts had evaluated Schlup's new evidence under the wrong, tougher standard, the Court concluded their analysis could not stand and further fact-specific review was required.
Doctrinal impact
Cases affected by this decision
Limits Sawyer v. Whitley (505 U. S. 333)
Confines Sawyer's strict clear-and-convincing standard to claims of innocence of the death penalty, not innocence of the crime.
Reaffirms Murray v. Carrier (477 U. S. 478)
Adopts Carrier's more lenient 'probably resulted' standard as the correct test for actual-innocence gateway claims.