Cal. Elec. Code § 2130
From moneys appropriated by the Legislature, the Controller shall allocate and disburse to the counties the amounts necessary to reimburse them for net costs incurred by them in complying with the voter registration provisions, including the provisions authorizing voter registration by mail and voter outreach programs, as set forth in Chapter 704 of the Statutes of 1975, as amended. The Secretary of State, in consultation with the Controller, shall develop a formula for the reimbursement of these costs. The Controller shall prescribe the forms for filing claims pursuant to this section. These claims shall be submitted to the Controller by February 15 in the year following the fiscal year in which the costs were incurred.
Ca. Elec. Code § 2130