Gov. Code, § 81009.5

(a) Any local government agency which has enacted, enacts, amends, or repeals an ordinance or other provision of law affecting campaign contributions and expenditures shall file a copy of the action with the commission.

(b) Notwithstanding Section 81013, no local government agency shall enact any ordinance imposing filing requirements additional to or different from those set forth in Chapter 4 (commencing with Section 84100) for elections held in its jurisdiction unless the additional or different filing requirements apply only to the candidates seeking election in that jurisdiction, their controlled committees or committees formed or existing primarily to support or oppose their candidacies, and to committees formed or existing primarily to support or oppose a candidate or to support or oppose the qualification of, or passage of, a local ballot measure which is being voted on only in that jurisdiction, and to city or county general purpose committees active only in that city or county, respectively.