The voir dire process is the questioning phase of jury selection, where the judge and the attorneys interview prospective jurors to identify bias, conflicts of interest, or any reason a person could not decide the case fairly. If you have been summoned, this is the stage that determines whether you end up on the panel or go home. Federal criminal trials seat 12 jurors; federal civil trials seat between 6 and 12.1LII / Legal Information Institute. Federal Rules of Civil Procedure Rule 48 – Number of Jurors, Verdict, Polling Voir dire is the filter that gets a large pool of citizens down to that final number.
From Summons to the Jury Box
Courts summon a large group of citizens, called the venire, drawn from sources like voter registration rolls and driver’s license records. When you arrive, a judge or court staff member explains the general schedule and describes the case in broad terms, such as whether it is criminal or civil, without getting into specifics. A smaller group is then called forward and seated in the jury box for direct questioning.
Some courts hand out written questionnaires before oral questioning begins. These ask about your employment, prior jury service, connections to the legal system, and other background details that help flag obvious conflicts early. You fill them out privately and return them within a few days. In complex or high-profile cases, the answers can speed up the oral phase significantly because attorneys arrive already knowing who they want to focus on.
Who Qualifies to Serve
Federal law sets baseline requirements that most states mirror. You must be a U.S. citizen, at least 18 years old, and have lived in the judicial district for at least one year. You need to be able to read, write, and speak English well enough to follow the trial. Anyone with a pending felony charge or an unrestored felony conviction is disqualified, as is anyone whose physical or mental health would prevent meaningful participation.2Office of the Law Revision Counsel. 28 U.S. Code 1865 – Qualifications for Jury Service
Certain groups are automatically exempt from federal jury duty: active-duty military members, police and fire department personnel, and public officers actively performing government duties at the federal, state, or local level.3Office of the Law Revision Counsel. 28 U.S. Code 1863 – Plan for Random Jury Selection Beyond those categorical exemptions, courts can excuse individuals who show that serving would cause genuine hardship. Common grounds are sole-caregiver responsibilities where no substitute is available, financial harm severe enough to jeopardize basic living expenses, or a health condition that would worsen with service. Courts typically require documentation, not just a claim of inconvenience.
How the Questioning Works
The structure of oral questioning varies. In federal cases, the judge may handle all the questioning directly or let the attorneys do it. If the judge takes the lead, attorneys can still propose additional questions or ask follow-ups the judge approves.4LII / Legal Information Institute. Federal Rules of Criminal Procedure Rule 24 – Trial Jurors Civil cases follow essentially the same framework.5LII / Legal Information Institute. Federal Rules of Civil Procedure Rule 47 – Selecting Jurors In many state courts, attorneys get more latitude to question jurors directly and at greater length.
The judge usually opens with broad questions: where you work, whether you know anyone involved in the case, whether you have heard media coverage about it, and whether serving would cause you a serious personal problem. These establish a baseline and flag the obvious disqualifications.
Attorneys then dig deeper with questions tied to the specific issues at trial. A defense lawyer in a self-defense case might ask whether you could fairly weigh testimony about the defendant’s fear for their safety. A plaintiff’s attorney in a medical malpractice suit might explore whether you instinctively trust doctors’ judgment. The goal is not to find jurors who favor one side. It is to identify people whose experiences or beliefs would make impartiality genuinely difficult.
What Happens If You Say Something That Suggests Bias
If you say something during questioning that sounds like bias, such as admitting a strong distrust of insurance companies in a personal injury case, that is not necessarily the end of it. The judge or an attorney can follow up with what is called rehabilitation, asking whether you could set that feeling aside and decide the case only on the evidence. If you credibly commit to doing so, the judge may keep you in the pool. People often express gut reactions under questioning that do not actually reflect how they would behave once given clear instructions and a sworn obligation.
Challenges for Cause
A challenge for cause asks the judge to remove a prospective juror for a specific, articulable reason: a personal relationship with one of the parties, a financial stake in the outcome, prior knowledge that would prevent an open mind, or a stated inability to follow the law as instructed. The attorney must explain the reason, and the judge decides whether it is valid. There is no cap on the number of for-cause challenges either side can raise, which is why attorneys spend so much time drawing out potential biases during questioning. A successful for-cause challenge is a free removal that does not cost the attorney a peremptory strike.
Peremptory Challenges
A peremptory challenge lets an attorney remove a prospective juror without explaining why. The trade-off is that each side gets a limited number. In federal criminal cases, those numbers depend on the severity of the charge:
- Capital cases: 20 peremptory challenges per side.
- Other felonies: 6 for the prosecution, 10 for the defense.
- Misdemeanors: 3 per side.4LII / Legal Information Institute. Federal Rules of Criminal Procedure Rule 24 – Trial Jurors
In federal civil cases, each side gets 3 peremptory challenges, though the court can grant more when multiple plaintiffs or defendants have conflicting interests.6Office of the Law Revision Counsel. 28 U.S. Code 1870 – Challenges State courts set their own numbers, which vary widely.
Limits Set by Batson
Peremptory challenges are discretionary but not unlimited in purpose. In 1986, the Supreme Court held in Batson v. Kentucky that using peremptory strikes to remove jurors because of their race violates the Equal Protection Clause.7LII / Legal Information Institute. Batson v. Kentucky, 476 U.S. 79 (1986) Eight years later, J.E.B. v. Alabama extended that prohibition to gender.8LII / Legal Information Institute. J.E.B. v. Alabama ex rel. T.B., 511 U.S. 127 (1994)
When one side suspects the other of striking jurors for a discriminatory reason, they raise a Batson challenge. The process runs in three steps: the objecting party points to a pattern suggesting discrimination, the striking party must offer a race- or gender-neutral explanation, and the judge decides whether that explanation is genuine or a pretext. In Flowers v. Mississippi, the Supreme Court reinforced that courts must look at all the surrounding circumstances, including the attorney’s history of strikes in prior trials, when evaluating whether a stated reason is credible.9Supreme Court of the United States. Flowers v. Mississippi, 588 U.S. 284 (2019)
Rules You Must Follow While You Are a Prospective Juror
From the moment you are called into the jury box, court rules restrict your behavior. The one that catches people off guard: you cannot research anything about the case. No Googling the parties, no looking up legal terms, no searching news coverage, no checking social media for discussion of the trial. Federal model jury instructions specifically warn jurors not to use phones, tablets, or computers for any investigation related to the case, and to ignore any information they encounter accidentally while browsing.10U.S. Courts. Proposed Model Jury Instructions – The Use of Electronic Technology
You also cannot discuss the case with anyone, not your spouse, not your coworkers, not your social media followers, until deliberations begin, and even then only with your fellow jurors. These restrictions apply throughout the entire trial, not just during voir dire.
What Happens If You Skip the Summons or Lie During Questioning
Skipping jury duty is not consequence-free. Under federal law, anyone who fails to appear after a court order to show cause, or who cannot demonstrate a good reason for missing the summons, faces a fine of up to $1,000, up to three days in jail, community service, or a combination of the three. The same penalties apply to anyone who lies on a juror qualification form to dodge service.11Office of the Law Revision Counsel. 28 U.S. Code 1866 – Selection and Summoning of Jury Panels
Lying during voir dire carries more serious consequences. A juror who deliberately conceals a relationship with a party or a strong bias can be held in criminal contempt, and case law has treated such concealment as grounds for overturning the verdict and ordering a new trial.
Seating the Jury and What You Get Paid
Voir dire ends when both sides have used or waived their remaining challenges and accept the seated panel. The final jury includes the required number of jurors plus alternates. In federal court, a judge can seat up to six alternates to replace anyone who becomes sick or is otherwise unable to continue.4LII / Legal Information Institute. Federal Rules of Criminal Procedure Rule 24 – Trial Jurors Alternates sit through the entire trial under the same rules as regular jurors and step in if needed. The court clerk then administers an oath requiring every juror to decide the case impartially based on the evidence, and the trial moves to opening statements.
Federal jurors receive $50 per day for each day they attend, including travel days at the beginning and end of service. If a trial runs longer than ten days, the judge can increase that to up to $60 per day for the remaining days.12Office of the Law Revision Counsel. 28 U.S. Code 1871 – Fees State court pay varies dramatically, from nothing in a couple of states to around $50 per day in the highest-paying ones. Many states offer mileage reimbursement; roughly half do not.
Most states do not require employers to pay your regular salary while you serve, though nearly all prohibit your employer from firing you or forcing you to use vacation time because of jury duty. If you are self-employed or work hourly without paid leave, the financial hit can be real, and it is one of the most commonly granted hardship excuses when the expected trial is lengthy.