California Code, Government Code - GOV § 8880.24

(a) The California State Lottery Commission shall exercise all powers necessary to effectuate the purposes of this chapter.  In all decisions, the commission shall take into account the particularly sensitive nature of the California State Lottery and shall act to promote and ensure integrity, security, honesty, and fairness in the operation and administration of the Lottery.

(b) In decisions relating to advertising and promotion of the California State Lottery, the commission shall ensure that the California State Lottery complies with both the letter and spirit of the laws governing false and misleading advertising, including Section 17500 et seq. of the Business and Professions Code.  The commission shall also ensure that the overall estimated odds of winning some prize or prizes in a particular lottery game are posted on all television and print advertising, exclusive of outdoor advertising displays, signs, or banners, related to that game.