A hung jury means the jury cannot reach the verdict required by the court, and the judge declares a mistrial. The jury is dismissed, the defendant is neither convicted nor acquitted, and the prosecution decides whether to retry the case. The defendant usually walks out of the courtroom free of that trial, but the charges can remain pending.
Juries do not need to be unanimous everywhere. A single holdout can hang a jury in a felony case in most states, while some states allow a verdict at 10-to-2 or 11-to-1. The law rarely imposes a deadline on deliberations, so a judge can keep a divided jury working for days before declaring the deadlock final.
What "hung" means in legal terms
A hung jury is a procedural failure, not a verdict. The jury has been selected, sworn, and instructed on the law, but it cannot produce the number of votes the jurisdiction requires. When that deadlock is reported, the judge must decide whether to send the jury back for more work or to accept that further deliberation is futile.
That decision is the heart of the mechanism. Judges are allowed to push a jury to try again, often with an instruction that some courts call a dynamite charge or an Allen charge. The judge tells the jurors to reexamine their views, listen to one another, and try to reach a verdict. The instruction is lawful when it does not coerce a juror into abandoning an honest conviction.
Most criminal cases require unanimity. The Sixth Amendment guarantees a jury trial, and the Supreme Court has held that the jury's verdict must be unanimous in federal felony cases. State practice varies. Oregon and Louisiana have historically allowed non-unanimous verdicts in some felony cases, and a handful of states permit a qualified majority in limited circumstances. Outside those exceptions, one juror who will not move is enough to hang the panel.
The practical result of a deadlock is the mistrial declaration. The judge discharges the jury, enters the mistrial on the record, and returns the case to the parties. The prosecution may refile or retry. The defense may seek dismissal if the state's case is weak or if the retrial would be unfair. The defendant is not off the hook automatically.
One level deeper: the hung jury is a built-in pressure valve that protects the standard of proof. A jury that cannot agree above reasonable doubt is, by definition, a jury that has not found the defendant guilty. The law treats that failure as a non-result rather than as an acquittal because the prosecution has not had a full opportunity to present its case to a fresh panel.
The vote-count arithmetic that decides deadlock
The numbers matter because they determine whether a jury is hung at all. In a 12-person panel, unanimity means 12 votes in one direction. A single holdout at 11-to-1 is a hung jury in a unanimous-verdict jurisdiction. The same split in a court that allows 10-to-2 or 11-to-1 may produce a verdict instead of a mistrial.
The threshold can shift by case type. Misdemeanor juries are sometimes smaller, often six jurors, and unanimity rules still apply in many courts. A six-person jury needs all six. Some jurisdictions allow a five-of-six verdict in limited civil or petty matters, but that is a narrow exception, not the norm.
Deadlock reporting typically follows a structured sequence. Jurors return a note stating they are unable to agree. The judge questions the foreperson, sometimes polling the panel, then issues an instruction to continue. If the jury reports deadlock again, the judge may declare a mistrial. There is no national rule that fixes how many deadlock notes must be filed before a mistrial is declared.
Timing is a factor but not a rule. A jury can deliberate for hours or for weeks. Judges weigh the complexity of the evidence, the length of the trial, and the jurors' stated positions when deciding whether more deliberation is worthwhile. A quick deadlock report after a long trial may prompt more pressure to continue. A deadlock after days of deliberation may prompt acceptance.
Two divergent rules create the practical split. In a unanimous-verdict state, a lone dissenter is decisive. In a qualified-majority state, a lone dissenter is not. Knowing which rule applies is the first step in predicting what happens when a jury cannot agree.
What the judge can and cannot do
The judge's authority over a deadlocked jury is broad but bounded. The court can instruct the jury to keep deliberating, can order the jury to clarify its division, and can ask jurors to identify the specific issues that divide them. The court cannot force a particular verdict, cannot threaten jurors with punishment, and cannot promise them anything in exchange for agreement.
The re-instruction after a deadlock is where appellate courts focus. An instruction that merely urges continued deliberation is generally permissible. An instruction that singles out the minority, demands a verdict, or implies that the jury is expected to convict can be coercive and can reverse a conviction on appeal. Courts distinguish between a permissible nudge and unconstitutional pressure by examining the words used and the surrounding circumstances.
The judge also controls the jury's access to evidence. After a deadlock, the court may allow the jury to rehear testimony or re-examine exhibits. In some courts, the panel can hear a readback of key witness testimony. The judge weighs whether that helps resolve the disagreement or simply prolongs it.
A less visible mechanism is the jury polling. Judges can poll individual jurors in open court to verify the vote and the jurors' willingness to continue. The poll confirms whether the deadlock is genuine. A juror who says she will not change her mind, even after pressure, is usually enough to support a mistrial.
The final tool is the mistrial declaration itself. The judge enters it in the record, thanks the jurors, and discharges them. The discharge is not an exoneration. It is an acknowledgment that this particular panel, on this particular evidence, could not produce a result.
Edge cases that change the outcome
Several uncommon scenarios change what a hung jury means for the parties.
A deadlocked jury in a capital case triggers the most consequential split. If the jury cannot agree on the death penalty but agrees on guilt, the penalty phase may deadlock separately. The result can be a life sentence or a new penalty trial, depending on the state's rules. A single holdout on death is enough to block execution in unanimous-penalty jurisdictions.
A hung jury in a civil case is different because civil verdicts often require only a qualified majority. A 9-to-3 or 10-to-2 split may be sufficient, so deadlock is less common. When it happens, the judge may order a new trial, and the parties may settle rather than relitigate.
A jury that deadlocks after being told the verdict is close to unanimous may be flagged for coercion. If a judge demands that the jury "reach a verdict" without regard to honest disagreement, an appellate court can order a new trial or reverse a conviction. This is the counterintuitive detail many thin explainers miss: a hung jury is not only a loss for the prosecution. It can be the first step toward appellate relief for the defense if the judge mishandled the deadlock.
A hung jury in a high-publicity case can also lead to juror harassment or investigation. Some jurisdictions allow the court to protect juror identities after discharge. This is a safety issue, not a verdict issue, but it affects how the public experiences the deadlock.
The American Bar Association's standards on jury trials treat the deadlocked jury as a failure of the deliberative process rather than a failure of the parties. Most observers treat the mistrial as a neutral result. The actual outcome depends on what happens after the mistrial.
Why the mistrial is not an acquittal
The public often confuses a hung jury with an acquittal. The difference is legal and practical. An acquittal is a final verdict of not guilty. Double jeopardy bars a retrial after an acquittal. A hung jury produces no verdict, and the charges remain alive.
The prosecution retains discretion. Prosecutors can retry the case, dismiss the charges, or negotiate a plea. In practice, many prosecutors retry only when they believe the evidence is strong and the deadlock was a fluke. The first jury's split is a signal about the weakest parts of the case.
The defense benefits in three ways. The delay gives the defense time to investigate and prepare. The first trial provides a preview of the prosecution's evidence. The deadlock itself signals to the court and to any future jury that the case is contestable.
There are limits on retrial. If the judge declared the mistrial over the defense's objection and without the defendant's consent, the defense can argue that retrial violates double jeopardy. The Supreme Court has held that retrial is generally permitted after a hung jury declared with the defendant's consent or after manifest necessity. A retrial after a deadlock is usually constitutional, but the analysis is case specific.
A hung jury does not mean the defendant is innocent. A hung jury does not mean the case is over. A hung jury does not bind the next jury. A hung jury in a unanimous-verdict state can result from a single juror. A hung jury can be retried unless the judge's handling triggers a double jeopardy challenge.
The timeline from deadlock to disposition
A hung jury follows a predictable arc, though the dates vary by court.
| Stage | What happens | Typical timing |
|---|---|---|
| Deadlock report | Foreperson tells the judge the jury cannot agree | After hours to weeks of deliberation |
| First instruction | Judge urges continued deliberation | Same day or next session |
| Second report | Jury confirms it remains divided | Usually within days |
| Mistrial declaration | Judge discharges the jury and enters mistrial | On the record, same session |
| Prosecution decision | State decides whether to retry | Within weeks, up to months |
| Retrial or dismissal | New trial, plea, or dismissal | Months to a year later |
The first row is the key measurement. A jury that deadlocks quickly after a long trial may be pushed harder. A jury that deadlocks after extensive deliberation may be accepted as genuinely hung. Courts do not publish a fixed number of hours, and appellate review focuses on coercion, not on the clock.
Practical actions for people facing a hung jury
The most important practical step depends on which side you are on. The general steps below are for anyone trying to understand or respond to a deadlock.
Ask for the exact voting rule for the charge and court. Confirm unanimity or qualified majority before assuming a single holdout hangs the jury. Get the mistrial declaration in the record. The transcript should show the deadlock note, the instruction, and the discharge. Evaluate retrial risk within days. Prosecutors weigh the split, the evidence, and publicity before deciding to refile. Preserve appellate issues. If the judge pressured the jury, the defense should make a contemporaneous objection. Protect juror safety and privacy. Courts can seal juror identities and limit post-verdict contact in high-publicity cases. Track the double jeopardy clock. A retrial after a defense-consented mistrial is usually permitted, but the analysis is fact specific.
For the public, the threshold to remember is simple: in a unanimous-verdict court, 11-to-1 is a deadlock. In a qualified-majority court, 11-to-1 may be a verdict. The difference is not a matter of degree. It is a different legal regime.
Limitations of what a deadlock can tell us
A hung jury tells us that a particular jury could not agree on a particular record. It does not tell us why. The deadlock may reflect a genuine evidentiary gap, a disagreement about witness credibility, a misunderstanding of the law, or a single juror's fixed view. Without a juror interview, the cause is usually unknown.
The published statistics are limited. Courts report mistrial rates in aggregate, but the number of hung juries is small relative to total trials, and the data vary by jurisdiction. National figures are not current or comparable across states. Any precise percentage should be treated with caution and checked against the specific court's data.
The deadlock also tells us nothing about the next trial. A second jury is a fresh panel with a fresh jury pool. The first split may predict the second trial's risk, but it does not determine it. Retrials can produce convictions, acquittals, or another deadlock.
A final caveat: not every reported deadlock is a true deadlock. A jury may report a deadlock prematurely, and a judge may push it back to work. The question "what happens when there is a hung jury" has a procedural answer and a strategic one. The procedural answer is a mistrial and a possible retrial. The strategic answer depends on the evidence, the vote count, and the judge's handling of the deliberation.
This article is general educational information about jury procedure, not a legal opinion or advice for any specific case. It does not promise any outcome, and it is not a substitute for advice from a qualified attorney licensed in your jurisdiction. If you are involved in a case, consult a local lawyer promptly.