CAL. PEN. CODE § 319 : California Code - Section 319

A lottery is any scheme for the disposal or distribution of property by chance, among persons who have paid or promised to pay any valuable consideration for the chance of obtaining such property or a portion of it, or for any share or any interest in such property, upon any agreement, understanding, or expectation that it is to be distributed or disposed of by lot or chance, whether called a lottery, raffle, or gift enterprise, or by whatever name the same may be known.