Grand jurors are selected randomly from the local population to ensure the panel represents a fair cross-section of the community. In fact, they are drawn from the exact same lists and summoned in the exact same way as regular trial juries.
Here is a breakdown of the three-step process used to select a grand jury.
To begin the process, courts compile a master list of potential jurors using reliable public records, most commonly merging lists of registered voters and licensed drivers. The goal is to ensure adequate demographic representation and provide an equal opportunity for anyone in the community to be chosen. From this massive pool, a specific number of individuals are randomly summoned to report to the courthouse for jury duty.
Once summoned, individuals must meet a few basic statutory requirements before they can be seated on the grand jury. While the exact rules vary slightly between state and federal courts, a grand juror generally must:
The most significant difference in selecting a grand jury versus a trial jury (also known as a petit jury) is how the individuals are questioned. In a regular trial, the judge and attorneys question potential jurors extensively during a process called voir dire to screen out anyone with personal biases regarding the specific case.
Grand jurors, however, are generally not screened for bias. Because a grand jury will hear dozens of different cases over a period of months, a judge or clerk simply verifies that they meet the basic legal eligibility factors—such as checking their felony status or language proficiency and then seats them on the panel.
The selection process is designed to be a blind, random draw of everyday people. This ensures that the grand jury remains an independent body of citizens—rather than a group of politicians or legal professionals—empowered to act as a fair shield between the government and the community.
