Rule 606 - Juror's Competency as a Witness(a)At the Trial. A juror may not testify as a witness before the other jurors at the trial. If a juror is called to testify, the court must give a party an opportunity to object outside the jury's presence.(b)During an Inquiry into the Validity of a Verdict or Indictment.(1) Prohibited Testimony or Other Evidence. During an inquiry into the validity of a verdict or indictment, a juror may not testify about any statement made or incident that occurred during the jury's deliberations; the effect of anything on that juror's or another juror's vote; or any juror's mental processes concerning the verdict or indictment. The court may not receive a juror's affidavit or evidence of a juror's statement on these matters.
(2) Exceptions. A juror may testify about whether:(A) extraneous prejudicial information was improperly brought to the jury's attention;(B) an outside influence was improperly brought to bear on any juror; or(C) the jury determined any issue by resort to chance; or(D) a mistake was made in entering the verdict on the verdict form.Adopted January 8, 1985, effective 7/1/1985; amended March 26, 2018, effective 7/1/2018.