There is no fixed number of mistrials before a case is dismissed. A prosecution can be retried two, three, or in rare cases even six times, and the decision to finally end it rests with the trial judge’s discretion and the prosecutor’s willingness to keep going. What changes with each mistrial is the pressure to stop: constitutional protections and practical exhaustion make dismissal more likely the longer the cycle runs, but no statute sets a cap.
In practice, most cases resolve after the second or third mistrial. Prosecutors reassess weak evidence, offer plea deals, or drop charges rather than fund another uncertain trial, and judges grow skeptical of authorizing further attempts when juries keep failing to convict on the same proof. But that is convention, not law.
What Actually Drives the Decision to Dismiss
Because no rule sets a number, judges look at why the mistrials happened and what another trial would accomplish. Repeated hung juries suggest the government’s evidence is not strong enough to convince twelve people, and each additional deadlock weakens the argument that a fresh jury will reach a different result. Mistrials caused by unrelated problems, like juror illness or a procedural error, carry less weight on the merits.
Prosecutorial misconduct changes the analysis sharply. Courts are far less patient with a prosecutor who keeps repeating the same errors than with one who got unlucky, and a pattern of misconduct across retrials pushes hard toward ending the case.
The seriousness of the charges cuts both ways. Judges hesitate to dismiss murder or major felony cases because the public interest in a resolution is higher, but serious charges also mean the defendant has been living under a heavier cloud, which increases the harm from continued delay. Whether the defendant has been in custody between trials matters a great deal. Someone who could not make bail and has been incarcerated through two or three mistrials has a much stronger argument for dismissal than a defendant free on bond.
Dismissal With Prejudice vs. Without Prejudice
If a case is dismissed after multiple mistrials, the type of dismissal determines whether it is truly over. This is the single most important distinction for anyone tracking the outcome.
A dismissal with prejudice permanently ends the case. The prosecutor cannot refile the charges, bring new charges based on the same conduct, or reopen the matter. For practical purposes, it is the next best thing to an acquittal.
A dismissal without prejudice only pauses the prosecution. The charges are gone for now, but the prosecutor can refile as long as the statute of limitations has not expired. Defendants who assume a dismissal is the end sometimes get an unpleasant surprise months later when they are re-indicted.
After repeated mistrials, defense attorneys push for dismissal with prejudice, arguing the defendant has already endured enough and another trial would serve no legitimate purpose. Judges grant that remedy sparingly, but it becomes more realistic as the mistrial count climbs and the prosecution’s chances of a different result shrink.
Double Jeopardy Rarely Blocks a Retrial
The Fifth Amendment’s double jeopardy clause says no person shall “be subject for the same offence to be twice put in jeopardy of life or limb.”1Constitution Annotated. Amdt5.3.4 Re-Prosecution After Mistrial Many people assume this means a mistrial ends the government’s opportunity. It usually does not.
In United States v. Perez (1824), the Supreme Court held that a judge may discharge a jury without the defendant’s consent when there is a “manifest necessity” for doing so, and that discharge does not bar a second trial.2Legal Information Institute. Reprosecution After Mistrial A hung jury is the textbook example. The Court reinforced this in Arizona v. Washington (1978), stating that “as a general rule, the prosecutor is entitled to one, and only one, opportunity to require an accused to stand trial,” but recognizing that when a trial ends without a verdict for legitimate reasons, the defendant’s interest in finishing with a particular jury must sometimes yield to the public interest in giving the prosecutor “one full and fair opportunity to present his evidence.”1Constitution Annotated. Amdt5.3.4 Re-Prosecution After Mistrial
The narrow exception comes from Oregon v. Kennedy (1982), where the Supreme Court held that when a defendant successfully moves for a mistrial, double jeopardy bars a second trial only if the prosecution intentionally provoked the defendant into requesting it.3Justia U.S. Supreme Court Center. Oregon v. Kennedy, 456 US 667 (1982) The Court rejected a broader “overreaching” standard as too vague. Under Kennedy, even prosecutorial conduct that amounts to harassment will not bar retrial unless the prosecutor specifically intended to goad the defense into asking for a mistrial.
Proving that intent is extremely difficult, and most double jeopardy motions after mistrials fail. The argument gains real strength only when a pattern emerges across multiple mistrials, especially where the same prosecutor repeats the same type of misconduct.
Speedy Trial: The More Useful Tool After Multiple Mistrials
The Sixth Amendment right to a speedy trial is often the more practical route to dismissal when retrials pile up. In Barker v. Wingo (1972), the Supreme Court set out a four-factor test: the length of the delay, the reason for it, whether the defendant asserted the right, and the prejudice the defendant has suffered.4Justia U.S. Supreme Court Center. Barker v. Wingo, 407 US 514 (1972)
Multiple mistrials rack up delay quickly. Each retrial cycle means new jury selection, witness preparation, and trial time, and the cumulative wait can stretch into years. Deliberate government delay weighs heavily against the prosecution; neutral reasons like court congestion weigh less but still count. Prejudice includes extended pretrial detention, anxiety, and the loss of witnesses or memories that could support a defense. If a speedy trial violation is found, the remedy is dismissal with prejudice, which is why this argument matters so much after repeated mistrials.
Federal defendants also have the Speedy Trial Act as a statutory backstop. The Act requires retrial to begin within 70 days of a mistrial declaration, subject to exclusions for pretrial motions and other qualifying delays.5Office of the Law Revision Counsel. 18 USC 3161 – Time Limits and Exclusions Most states have their own speedy trial statutes with similar deadlines, though the specific windows vary. If the government misses the window, the defense can move to dismiss, though the court has discretion over whether that dismissal is with or without prejudice.
What Happens Between Retrials
When a judge declares a mistrial, the trial simply stops. No verdict is entered, no conviction or acquittal is recorded, and the charges remain pending. The case resets to its pretrial status.
The prosecutor then decides whether to retry, offer a plea, or drop the case. There is no legal obligation to retry, and practical factors like the strength of the evidence, the cost of another trial, and the reason for the mistrial all factor in. After multiple mistrials, prosecutors sometimes offer more favorable plea terms or dismiss charges rather than invest resources in another uncertain outcome.
Existing bail or detention conditions typically stay in place between trials. A defendant who could not make bail before the mistrial remains in custody while the next trial is scheduled, which is one reason repeated mistrials are so punishing even when they eventually lead to dismissal.
The Outer Edge: How Many Retrials the System Will Actually Allow
The Curtis Flowers case shows how far serial retrials can go. Flowers was tried six times for the same murders in Mississippi over more than two decades. Two trials ended in hung juries, and three convictions were overturned on appeal due to prosecutorial misconduct, including racially discriminatory jury selection. The Supreme Court reversed his sixth conviction in 2019, and in 2020 the prosecution finally dismissed all charges with prejudice.
That is an extreme case, and it took Supreme Court intervention plus documented misconduct to get there. The everyday reality is closer to two or three: after a second or third hung jury, prosecutors usually reassess and either negotiate a plea or decide the case is not winnable, and judges grow openly skeptical of authorizing another attempt on the same evidence. No rule requires that outcome, but the combined weight of double jeopardy principles, speedy trial deadlines, cost, and prosecutorial judgment tends to end most cases well short of the Flowers extreme.