55 ILCS 5/3-9001
Before entering upon the respective duties of their office, the state's attorneys shall each be commissioned by the governor, and shall take the following oath or affirmation:
I do solemnly swear (or affirm, as the case may be), that I will support the constitution of the United States and the constitution of the state of Illinois, and that I will faithfully discharge the duties of the office of state's attorney according to the best of my ability.
Each State's attorney shall also execute a bond, to the People of the State of Illinois, (or, if the county is self-insured, the county through its self-insurance program may provide bonding) with good and sufficient securities in the penal sum of $5,000, to be approved by the circuit court for the respective county, which approval shall be indorsed upon the bond. The bond, with the approval thereof indorsed, shall be entered of record in the circuit court, and then forwarded by the county clerk to the secretary of state, to be filed in the Secretary of State's office. Each of the bonds shall be conditioned upon the faithful discharge of the duties of the office, and the paying over all moneys as provided by law, which bond shall run to and be for the benefit of the state, county, corporation or person injured by a breach of any of the conditions thereof.
55 ILCS 5/3-9001