30 ILCS 245/1

As used in this Act:

(a) "Public official" means any person who occupies any office, position or employment in the government of the State of Illinois or any county, municipality or political subdivision thereof, or any school district, or special district, or any authority, commission, board, or any branch or agency of public service. The term includes persons either elected or appointed.

(b) "Instrument" means any item for the payment of money and includes, but is not limited to, drafts, checks, certificates of deposit, notes, and money orders.