A jury trial is a court proceeding in which a group of ordinary citizens, rather than the judge, hears the evidence and decides the facts of a case before delivering a verdict. If you are asking what a jury trial means in practice, it means both sides present their case in open court, the judge referees and explains the law, and the jury, drawn from the community, deliberates privately and announces who wins. The U.S. Constitution guarantees this process in criminal cases through the Sixth Amendment and in many federal civil cases through the Seventh Amendment.1Legal Information Institute. Right to Jury Trial
When You Get a Jury
The Sixth Amendment covers criminal cases, guaranteeing an accused person a trial by an impartial jury from the state and district where the crime allegedly occurred. The Seventh Amendment covers civil suits “at common law” in federal court when the amount in dispute exceeds twenty dollars.1Legal Information Institute. Right to Jury Trial That figure has not been adjusted since 1791, so it reaches nearly every federal civil case for money damages. Most states separately guarantee jury trials in their own courts, with details that vary by state.
There are boundaries worth knowing. The Seventh Amendment applies only to federal civil claims seeking money. If a party asks the court for an injunction or another equitable remedy, there is no constitutional right to a jury, and the judge decides the case.2Legal Information Institute. Cases Combining Law and Equity On the criminal side, the Supreme Court has held that offenses punishable by six months of imprisonment or less are presumptively “petty,” meaning there is no constitutional right to a jury trial for those charges. A defendant can rebut that presumption only by showing the total possible penalties are severe enough that the legislature clearly treated the offense as serious, and that rarely happens.3Legal Information Institute. Petty Offense Doctrine and Maximum Sentences Over Six Months
Grand Jury or Trial Jury?
When most people say “jury trial,” they mean a trial jury, formally called a petit jury. A grand jury is a different body with a different job. It does not decide guilt. It reviews the prosecutor’s evidence in secret and decides whether there is enough to indict someone. A trial jury hears both sides in open court and returns a verdict.4United States Courts. Types of Juries Everything below is about trial juries.
How a Jury Gets Chosen
Jury selection happens through voir dire, a phrase meaning “to speak the truth.” Prospective jurors are brought in and questioned by the judge and attorneys to surface any reason someone could not be fair, such as a connection to a party, a strong preexisting opinion, or a personal experience too close to the facts of the case.5Legal Information Institute. Voir Dire
Attorneys can remove potential jurors two ways. A challenge for cause asks the judge to dismiss someone for a stated reason, like admitted bias. There is no cap on cause challenges, but the judge decides each one.6Legal Information Institute. Challenge for Cause A peremptory challenge lets an attorney strike a juror without giving a reason, and each side gets a limited number of these.7United States Courts. Participate in the Judicial Process – Rule of Law
Peremptory strikes have a constitutional limit. Under Batson v. Kentucky (1986), an attorney cannot use them to remove jurors because of race. If the opposing side suspects a strike was race-based, the attorney who used it must offer a race-neutral explanation, and the judge decides whether that explanation is genuine. Later cases extended the rule to gender.8Justia US Supreme Court. Batson v Kentucky, 476 US 79 (1986)
A trial jury has between 6 and 12 members, depending on the court and type of case.4United States Courts. Types of Juries Federal civil juries must have at least 6 and no more than 12.9Legal Information Institute. Federal Rules of Civil Procedure Rule 48 – Number of Jurors, Verdict, Polling The court can also seat up to six alternates who sit through the trial in case a regular juror cannot continue. If an alternate steps in after deliberations have started, the jury must start deliberating from scratch.10Legal Information Institute. Federal Rules of Criminal Procedure Rule 24 – Trial Jurors
What Happens During the Trial
Once the jury is seated, the trial follows a set sequence. Each stage has a specific purpose.
- Opening statements. The prosecution (in a criminal case) or the plaintiff’s attorney (in a civil case) goes first and outlines what the evidence will show. The defense follows. These are roadmaps, not evidence.
- Presentation of evidence. Each side calls witnesses, introduces documents and exhibits, and builds its case. Witnesses go through direct examination by the side that called them, then cross-examination by the other side. The prosecution or plaintiff presents first; the defense follows.
- Closing arguments. After the evidence is in, both sides summarize and argue why the record supports their position. This is the last chance to persuade the jury.
- Jury instructions. The judge explains the relevant law, including the legal standards the jury must apply. These instructions set the framework for deliberations.
- Deliberation. The jury retires to a private room to discuss the evidence and reach a verdict. No one else is present. Jurors can review exhibits and send questions to the judge, but their discussions stay confidential.
How Verdicts Work
The verdict is the jury’s formal decision. The rules depend on whether the case is criminal or civil and on the form of verdict the court uses.
Unanimity in Criminal Cases
In a serious criminal case, the verdict must be unanimous. The Supreme Court confirmed in Ramos v. Louisiana (2020) that this requirement applies in both federal and state courts. Before Ramos, a few states had allowed convictions on non-unanimous votes.11Constitution Annotated. Amdt6.4.4.3 Unanimity of the Jury One holdout juror is enough to prevent a conviction.
If the jury cannot reach a unanimous decision, it is a hung jury. The judge declares a mistrial, and the prosecution can decide whether to retry the case. A hung jury is not an acquittal, so a retrial does not violate the ban on double jeopardy.12Legal Information Institute. Hung Jury
Civil Verdicts
Civil cases work differently. Unanimity is common but not always required. Some jurisdictions accept a supermajority verdict, and federal civil cases generally require unanimity unless the parties agree otherwise.
General and Special Verdicts
Most juries deliver a general verdict: a plain statement of which side wins, with no explanation. In a criminal case, that is “guilty” or “not guilty.” In a civil case, it is a finding for the plaintiff or the defendant, plus any damages amount.13Legal Information Institute. General Verdict
Sometimes the judge asks for a special verdict instead. In that format, the jury answers a series of specific factual questions, and the judge applies the law to those answers. Courts can also combine the two: a general verdict with written questions on key facts. If the answers contradict the overall verdict, the judge can enter judgment on the answers, send the jury back to deliberate, or order a new trial.14Legal Information Institute. Federal Rules of Civil Procedure Rule 49 – Special Verdict, General Verdict and Questions
Polling the Jury
After the verdict is announced, either side can ask the judge to poll the jury. Each juror is then asked individually whether the announced verdict is truly theirs. The purpose is to confirm that every juror actually agreed and no one was pressured. If the poll shows the verdict was not unanimous in a case that required it, the judge sends the jury back to continue deliberating.
Who Does What
The judge runs the trial. That means keeping order, ruling on objections and evidence disputes, and explaining the law. The judge does not weigh the facts. The judge is the referee who enforces the rules without playing the game.
The jury’s job is narrower than most people assume. Jurors decide factual questions: Did this event happen? Is this witness believable? Does the evidence meet the legal standard the judge laid out? In a criminal case, that standard is proof beyond a reasonable doubt. In a civil case, it is a preponderance of the evidence, meaning the plaintiff’s version is more likely true than not.4United States Courts. Types of Juries
Attorneys present the evidence, question witnesses, and argue the case within the rules the judge enforces. In a criminal case, the prosecution represents the government and the defense represents the accused. In a civil case, the plaintiff’s attorney and the defendant’s attorney play the same roles.
Jury Trial Versus Bench Trial
Not every case goes to a jury. In a bench trial, the judge hears the evidence, finds the facts, and applies the law alone. Bench trials usually move faster because there is no jury selection, no need to translate technical material for non-lawyers, and no deliberation period. Attorneys often prefer them for cases that turn on complicated financial records, technical contract language, or regulatory details. A jury trial puts the decision in the hands of a cross-section of the community, which can matter when a case turns on credibility, sympathy, or community values.
A criminal defendant who would rather have a bench trial can waive the jury right, but not alone. In federal court, the waiver must be in writing, the government must consent, and the judge must approve it.15Legal Information Institute. Federal Rules of Criminal Procedure Rule 23 – Jury or Nonjury Trial The prosecution can effectively block a bench trial by refusing to consent. In civil cases, either party generally has the right to demand a jury, and waivers are usually made affirmatively.
Some contracts, especially in lending and commercial deals, include pre-dispute jury trial waivers. Courts enforce these only if the waiver was knowing and voluntary, and the party relying on it has to prove that. Judges look at whether the waiver was prominently displayed, whether the signer had legal counsel, and whether the parties had roughly equal bargaining power.