Jury selection trips up a surprising number of bar takers — not because the rules are obscure, but because students confuse the standards, mix up the procedures, and blank on the constitutional limits when it counts most.

If you’re studying Civil Procedure for the MBE, the selection and composition of juries is one of those topics that looks simple on the surface but hides some genuinely tricky distinctions. Let’s break it down the right way.

Why Selection and Composition of Juries Shows Up on the MBE

The NCBE tests jury selection because it sits at the intersection of procedure and constitutional law. You’re not just applying the Federal Rules of Civil Procedure — you’re also applying Equal Protection and due process principles that can invalidate a jury even after it’s been seated. That dual layer is exactly what the examiners love to exploit.

The good news: the rules are finite. Master the right framework and you’ll recognize the issue pattern instantly, no matter how the question dresses it up.

The Basic Framework: How Juries Are Selected Under the FRCP

Under the Federal Rules, civil juries are drawn from a venire — the pool of prospective jurors summoned for a case. The selection process that follows is called voir dire, during which the parties (through their attorneys) and the court question prospective jurors to identify potential bias or disqualification.

Two types of challenges govern who ends up on the jury.

Challenges for cause are unlimited. If a prospective juror demonstrates actual bias, a close relationship with a party, or any other disqualifying factor, either party can ask the court to remove that juror. The court decides. There’s no cap on how many for-cause challenges you can make, but you have to show actual grounds — vague suspicion won’t cut it.

Peremptory challenges are different. These allow a party to strike a prospective juror without giving any reason at all. Under 28 U.S.C. § 1870, in civil cases each side gets three peremptory challenges. The court has discretion to allow additional peremptories if alternate jurors are seated.

That unlimited/limited distinction is a classic MBE trap. Watch for a fact pattern where an attorney has already used all three peremptory challenges and wants to remove one more juror without cause. That’s not allowed — and if the question asks what happens next, the answer is the attorney must proceed with a for-cause challenge or accept the juror.

The Constitutional Floor: Batson and Its Civil Extension

Here’s where things get more interesting — and more testable.

In Batson v. Kentucky (1986), the Supreme Court held that a prosecutor cannot use peremptory challenges to exclude jurors on the basis of race. That was a criminal case. But the MBE tests the civil extension too.

In Edmonson v. Leesville Concrete Co. (1991), the Court extended Batson to civil cases. A private litigant cannot use peremptory challenges to exclude jurors based on race. And in J.E.B. v. Alabama ex rel. T.B. (1994), the Court extended the prohibition to sex. So in a civil case on the MBE, if an attorney systematically strikes all jurors of a particular race or sex, that’s a Batson challenge waiting to happen.

Here’s how the three-step Batson framework works:

  1. The opposing party must make a prima facie showing that the strike was based on a protected characteristic.
  2. The burden shifts to the striking party to offer a race-neutral (or sex-neutral) explanation.
  3. The court determines whether the explanation is credible or whether purposeful discrimination occurred.

Picture this hypothetical: In a federal civil case, the plaintiff’s attorney uses all three peremptory challenges to strike the only three male jurors on the panel. Defense counsel raises a Batson challenge. At step one, the pattern of strikes against a single sex is enough to raise the inference. The plaintiff’s attorney now has to explain why each strike was sex-neutral. If the explanation doesn’t hold up, the court can either reseat the juror or — depending on the stage — take other remedial action.

Don’t confuse the Batson framework with a for-cause challenge. They’re procedurally distinct. Batson polices the use of peremptories that are otherwise discretionary. For-cause challenges require demonstrated bias. They’re different tools with different standards.

Jury Size and Unanimity in Federal Civil Cases

This is another area where the MBE tests precision.

Under FRCP 48, a federal civil jury must begin with at least six jurors and no more than twelve. The parties may stipulate to fewer than six, but absent a stipulation, you need a minimum of six. The verdict must be unanimous unless the parties stipulate otherwise. That’s the default rule — unanimous verdict from a jury of six to twelve.

State courts can vary on this, and some do. But for MBE purposes, you’re working with the federal default: six to twelve jurors, unanimous verdict unless the parties agree otherwise.

The Selection and Composition of Juries MBE Trap: Confusing the Standards

The single biggest mistake students make on selection and composition of juries bar exam questions is collapsing all these rules into one muddy standard. They know “there’s something about race and juries” but can’t distinguish:

Keep these three categories clean and separate in your mind. The MBE question will typically give you a fact pattern where an attorney has struck a juror, ask you whether that strike was proper, and then test whether you know which framework applies.

Another trap: students forget that Batson applies to both sides. It’s not just a defendant’s protection. Either party can raise a Batson challenge, and in civil cases, either party can be the one whose discriminatory strikes get called out.

Alternate Jurors

One more rule worth knowing. Under FRCP 47(b), the court may impanel alternate jurors to replace any juror who becomes unable to continue. Alternates are selected in the same manner as regular jurors and must satisfy the same qualifications. If additional peremptory challenges are granted for alternates, the court determines how many each side gets.

The alternate juror issue shows up less frequently on the MBE, but it’s worth knowing cold — especially the fact that alternate jurors are selected through the same voir dire process and are subject to the same challenges.

Putting It Together: A Quick Issue-Spotting Checklist

When you see a jury selection question on the MBE, run through this checklist mentally:

If you can identify which of these issues the question is testing within the first read, you’re already ahead of most test-takers.

FlashTables is a set of professionally formatted two-column PDF rule tables covering all seven MBE subjects — 704 rules total, organized by the official NCBE Subject Matter Outline. The jury selection and composition rules discussed in this article are part of the Civil Procedure table, where each rule sits side-by-side with its elements so you can see the full framework at a glance. Whether you’re a 1L, 2L, or 3L building out your Civil Procedure outline, or a bar taker drilling active recall in the final weeks before the exam, the tables give you the black-letter law in a format that’s fast to review and easy to retain. You can see what’s covered at getflashtables.com.

Key Takeaways: What to Memorize for Selection and Composition of Juries

Lock these rules down cold. The MBE won’t ask you to write an essay — it’ll hand you a fact pattern and see if you can tell the difference between a legitimate peremptory strike and a constitutional violation. Now you can.