To be eligible for jury service, you must be a citizen of the United States; at least 18 years old; a resident of the county; not have a pending lawsuit. Click on the link below to complete your Juror Qualification Questionnaire or Juror Summons Information Form and Questionnaire.The purpose of this handbook is to acquaint trial jurors with the general nature and importance of their role as jurors. I moved from CA to IL for school and got a jury duty summons in CA. I postponed it and forgot it was this week. Be sure to mark the summons, and mail in the excuse on the jury form. Jury trials are increasingly used in a significant share of serious criminal cases in many common law judicial systems, but not all. Moreover, the trial court possesses great latitude in deciding what questions the court and the attorneys may ask during voir dire. "But it is a twosided process. People also have to be willing to fill out the form and respond. 503 (1965) ; Broeder, The Negro in Court, 1965 Duke L.J. 19; Broeder, Pre vious Jury Trial Service Affecting Juror Behavior, 506 Ins.