Cal. Civ. Proc. Code § 211

When a court has no prospective jurors remaining available for voir dire from panels furnished by, or available from, the jury commissioner, and finds that not proceeding with voir dire will place a party’s right to a trial by jury in jeopardy, the court may direct the sheriff or marshal to summon, serve, and immediately attach the person of a sufficient number of citizens having the qualifications of jurors, to complete the panel.