Amends the Lobbyist Registration Act. Provides that the term "official" as used under the Act includes specified officials of a unit of local government. Modifies the terms "lobby" and "lobbying" to include communications with units of local government for the ultimate purpose of influencing any executive, legislative, or administrative action, and further specifies such actions. Modifies the term "lobbyist" to mean a natural person who, on behalf of any person other than himself or herself, or as any part of his or her duties as an employee of another, undertakes to influence or lobby for any executive, legislative, or administrative action for State government or a unit of local government.