California Code, Government Code - GOV § 53972.5

A proposal for the creation of a local agency for the purpose of providing fire protection, prevention, or suppression services directly, by contract with another local agency, or pursuant to the Fire Protection District Law of 1987, Part 3 (commencing with Section 13800) of Division 12 of the Health and Safety Code, or police protection services, may be combined with a proposal for the adoption by the local agency of a special tax pursuant to Section 53978, and presented to the voters as a single ballot proposition.  If both proposals are presented as a single ballot proposition, the proposed local agency shall not be created, and the special tax shall not take effect, unless the proposition is approved by two-thirds of the voters voting upon the proposition.