Evidence: Jury Impeachment

About this book

Colin Miller’s Jury Impeachment is a focused teaching chapter about evidence used to challenge a verdict, particularly the limits associated with Federal Rule of Evidence 606(b). Its nine sections combine history, policy, cases, exceptions, and pleading examples. The linked file’s older discussion must be read historically: later Supreme Court developments are identified separately below. The guide follows the source’s sections and helps students distinguish evidence of an external event from accounts of a juror’s reasoning.

Chapter and section guide

I. The Rule

The opening section identifies what the no-impeachment rule excludes and the kinds of inquiry in which it operates. It concerns more than live testimony: a juror’s affidavit or another presentation of prohibited juror statements can raise the same problem. The rule’s subject is the attempted examination of a verdict or indictment through particular evidence, not a blanket declaration that every juror is incapable of testifying about anything. The text places the prohibition beside enumerated exceptions, so students must read both rather than treat one sentence as the complete rule.

Study application: Identify the source of a fictional statement, the proceeding in which it is offered, and the proposition it would prove. Explain why these questions should come before applying an exception.

II. Historical Origins

The historical account traces competing approaches to whether jurors should be permitted to undermine their own verdict. The difficulty is institutional: testimony may expose a serious problem, yet unrestricted inquiry can invite harassment and destabilize adjudication. Earlier approaches differed over which events could be proved and how far deliberations should remain protected. Reading this history helps students recognize that the boundary is a legal choice with consequences. It does not establish that every historical formulation remains applicable in the present jurisdiction.

Study application: Compare a broad prohibition with a rule admitting evidence of objectively observable events. State what each approach protects and the kind of misconduct each may make harder to investigate.

III. Drafting Rule 606(b)

The drafting discussion shows how competing proposals shaped the federal rule’s treatment of deliberations. A statutory or rule text can embody compromises that are not obvious from an isolated phrase. The source uses this history to explain why the external/internal distinction became important. Students should keep proposals, enacted language, restyled wording, and judicial interpretation distinct. A rejected formulation may illuminate a policy debate without itself becoming the governing rule.

Study application: Make a short chronology of the approaches described in the chapter. Label each item as a proposal, adopted text, or interpretation so legislative history is not inadvertently quoted as operative language.

IV. Public Policy

The policy section connects confidentiality and finality with the quality of jury deliberation and the protection of jurors after service. These interests must be considered alongside the demand for a fair adjudication. The argument is not that verdicts cannot be wrong, but that a legal system restricts particular ways of investigating them. A good answer can explain both the value protected by exclusion and the cost of excluding potentially informative evidence. Policy supports interpretation but does not eliminate the need to analyze text and authority.

Study application: Write the strongest argument on each side of admitting a fictional juror statement. Then identify what legal source, rather than personal preference, would determine whether it can be considered.

V. Supreme Court Precedent

The source’s case discussions make the rule concrete by showing how courts characterize juror conduct and evidence. Tanner is important to its account of internal misconduct and alternative safeguards. Readers should separate the conduct alleged, the evidence offered to establish it, and the judicial reason for admitting or excluding that evidence. The source predates important later authority and cannot be read as an exhaustive statement of present Supreme Court doctrine. Its educational value lies in comparing reasoning and recognizing how factual classification controls the issue.

Study application: Brief one case with separate headings for misconduct, evidentiary source, admissibility issue, and other safeguards. Explain why an allegation’s seriousness does not by itself resolve the evidentiary question.

VI. External and Internal Matters

The longest analytical section distinguishes extraneous prejudicial information, improper outside influence, and a mistake in entering a verdict on the form. These are not interchangeable exceptions. An outsider’s contact differs from a juror’s personal reasoning; a transcription error differs from a later change of mind. Even where an external event can be described, inquiry into its subjective effect may raise a further restriction. Students should state exactly which event they seek to prove before discussing its consequences.

Study application: Compare three fictional situations: an outside message, disagreement about the evidence, and a clerk-like entry mistake on a verdict form. Identify the distinct analytical question each raises without assuming all permit the same testimony.

VII. Situations Outside the Rule’s Scope

The source considers evidence from nonjurors and juror testimony offered for purposes other than impeaching a verdict. Scope is therefore a separate stage of analysis from an exception. Evidence that falls outside this particular restriction may still face other admissibility or procedural requirements. Conversely, relabeling an inquiry does not necessarily avoid the rule if its real purpose remains to challenge the verdict through deliberation evidence. The section trains readers to describe the use of evidence carefully.

Study application: Give two different proposed uses of the same fictional statement. Explain how purpose affects the scope inquiry and identify other evidentiary questions that would remain even if Rule 606(b) did not exclude it.

VIII. Splits in Authority

Miller compares jurisdictions and unresolved disputes concerning the scope of protection, violence, external influences, and bias. These differences show why a federal rule cannot simply be assumed to describe every state’s law. The older racial-bias discussion is particularly important to date correctly. A reader should preserve what the source reports as a disagreement at publication while separately researching later controlling authority. The lesson is methodological: a case’s jurisdiction, date, and procedural setting matter as much as its headline conclusion.

Study application: Build a comparison chart listing the issue, jurisdiction, date, and reasoning in two decisions discussed in the source. Mark later developments as a separate column rather than silently rewriting the historical account.

IX. Jury-Impeachment Pleadings

The closing section directs readers to examples of motions and related litigation documents. Such documents reveal how a party frames the requested inquiry, presents supporting facts, and addresses anticipated objections. They are advocacy materials, not neutral statements of the law or ready-made forms for every jurisdiction. Students should compare a proposed order, evidentiary submission, and legal argument separately. Reading a pleading effectively means understanding what the party wants the court to do and what must be established before that request can be granted.

Study application: Outline an original educational motion using a fictional outside-contact allegation. Separate requested relief, evidentiary foundation, legal issue, and limitations on the proposed inquiry; do not reuse a dated pleading as a current filing template.

Later development: Peña-Rodriguez v. Colorado

In 2017 the Supreme Court recognized a constitutional exception for a clear juror statement indicating reliance on racial stereotypes or animus to convict a criminal defendant. The decision does not authorize unrestricted inquiry into all deliberations or automatically require a new trial whenever bias is alleged. This later development must be distinguished from the chapter’s older account of divided authority. It is included here to prevent the historical discussion from being mistaken for a complete description of the current constitutional framework.

Study application: Read the official opinion and distinguish the threshold for considering the evidence from the ultimate question of relief. Explain why a limited constitutional holding should not be expanded into a general exception for every allegation of juror unfairness.

Study instructions

1. Begin by identifying whether the proposed evidence is being used to challenge a verdict or indictment.
2. Separate the identity of the witness, the event described, and the purpose of offering the statement.
3. Analyze the rule’s scope before considering textual exceptions and any constitutional issue.
4. Read historical cases with their dates and jurisdictions visible, especially the source’s discussion of bias.
5. Consult the official later opinion and current applicable law before making a contemporary legal claim.

Practice and review task

Prepare an evidence-classification sheet for four fictional events: an outside article, a juror’s interpretation of testimony, a verdict-form entry error, and a racially biased statement. Explain the distinct issues without predicting a case outcome from the allegation alone.

Questions for reflection

Why can the occurrence of outside contact be a different question from its subjective influence on a vote? What does the later constitutional exception change about reading an older teaching chapter?

Sources and coverage

This original study guide follows CALI eLangdell chapter, linked December 2014 file. It draws on the source contents, chapter introductions, selected explanations and examples, and review material. It condenses the resource rather than replacing the full text; study applications are original exercises. The separately labeled later development is based on the official Supreme Court opinion: https://www.supremecourt.gov/opinions/16pdf/15-606_886b.pdf . The chapter is not a current practice manual.

Reviewed source text; Book and cover catalog record.

Official later Supreme Court opinion.