(a) This section applies to the financing of joint primary elections notwithstanding and in addition to other applicable provisions of this code.
(b) Any surplus remaining in a county primary fund shall be remitted to the secretary of state immediately after the final payment from the fund of the necessary expenses for holding the primary elections for that year, but not later than July 1 following the applicable primary election. The surplus in the primary fund shall be remitted regardless of whether state funds were requested by the chair.
(c) The secretary of state shall adopt rules, consistent with this chapter to the extent practicable, that are necessary for the fair and efficient financing of joint primary elections.