Jury instructions regarding witnesses in Montana are outlined in Montana’s Rules on Evidence, rule 26-1-303. MONT. CODE ANN. § 26-1-303 (2017). This rule provides overarching rules that that govern how the jury should evaluate the evidence presented to it during the trial. Id. The rule states that the jury should decide what to believe by evaluating all of the evidence, and that the jury is not required to accept all testimony presented. Id. Additionally, if a witness presents dishonest testimony at one point while testifying, the jury should distrust the rest of that witness’s testimony. Id.
