To sign up Jury SMS text messages, please text your badge number to 925-369-5984 and follow the prompts. No information is available for this page.After you check in, jury staff will also instruct you to fill out a Voir Dire Questionnaire. You will be required to make only one appearance in court for jury selections held that day, or serve for one trial (jury selection may take more than one day). A summons for jury service is also sent to citizens and directs them to the online Juror Portal Questionnaire to complete prior to serving. Most trials last 3-7 days, but some may go longer. Any party may challenge the jury panel if a material departure from law has occurred in drawing or summoning jurors. Having lived over 10 years in California I was finally selected for jury duty at the Martinez Superior Court in Contra Costa last week. (1) Person over 75 years of age. (2) Persons who served as a petit or grand juror or appeared in court in response to a jury summons within the last year.