California Code, Government Code - GOV § 85310

(a) Any person who makes a payment or a promise of payment totaling fifty thousand dollars ($50,000) or more for a communication that clearly identifies a candidate for elective state office, but does not expressly advocate the election or defeat of the candidate, and that is disseminated, broadcast, or otherwise published within 45 days of an election, shall file online or electronically with the Secretary of State a report disclosing the name of the person, address, occupation, and employer, and amount of the payment.  The report shall be filed within 48 hours of making the payment or the promise to make the payment.

(c) Any payment received by a person who makes a communication described in subdivision (a) is subject to the limits specified in subdivision (b) of Section 85303 if the communication is made at the behest of the clearly identified candidate.