California Code, Government Code - GOV § 81009

(a) Statements of organization, registration statements, and original campaign statements of persons holding elective state office, candidates for any such office, committees supporting any such officeholder or candidate, and committees supporting or opposing statewide measures, shall be retained by filing officers indefinitely.

(b) Original campaign statements of mayors, city council members, county supervisors, candidates for any of these offices, and committees supporting any officeholder or candidate shall be retained indefinitely, except that original campaign statements of candidates not elected to these offices and of committees supporting candidates not elected to these offices shall be retained by filing officers for a period of at least five years.

(c) Original campaign statements of all other persons shall be retained by filing officers for at least seven years.

(d) Original statements of economic interests of persons holding statewide elective office shall be retained by filing officers indefinitely.

(e) Original reports and statements not specified above in this section shall be retained by filing officers for at least seven years.

(f) Copies of reports or statements shall be retained by the officer with whom they are filed for at least four years, provided, however, that a filing officer is not required to retain more than one copy of a report or statement.

(g) After an original report or statement or a copy filed in a paper format has been on file for at least two years, the officer with whom it is filed may comply with this section by retaining an electronic copy available for public inspection instead of the original report or statement or copy. Upon request, the officer shall provide copies of such statements pursuant to Section 81008.Reports and statements filed online or electronically under this title shall be retained and archived pursuant to this section and Section 84602 or 84615.