Cal. Elec. Code § 18621

Any proponent of an initiative or referendum measure or recall petition who seeks, solicits, bargains for, or obtains any money or thing of value of or from any person, firm, or corporation for the purpose of abandoning the same or stopping the circulation of petitions concerning the same, or failing or neglecting or refusing to file the measure or petition in the office of the elections official or other officer designated by law within the time required by law after obtaining the number of signatures required under the law to qualify the measure or petition, or withdrawing an initiative petition after filing it with the appropriate elections official, or performing any act that will prevent or aid in preventing the initiative, referendum, or recall proposed from qualifying as an initiative or referendum measure, or resulting in a recall election is punishable by a fine not exceeding five thousand dollars ($5,000) or by imprisonment pursuant to subdivision (h) of Section 1170 of the Penal Code for 16 months or two or three years, or in a county jail not exceeding one year, or by both that fine and imprisonment.