California Code
ARTICLE 1 - Improper Signature-Gathering Tactics
Section 18603.

18603. Every person who offers or gives money or other valuable consideration to another in exchange for his or her signature on a state, county, municipal, or district initiative, referendum, or recall petition is guilty of a misdemeanor.

(Amended by Stats. 1996, Ch. 714, Sec. 26. Effective January 1, 1997.)