Cal. Elections Code § 15001

(a) A copy of each election computer vote count program for a statewide election or state special election to fill vacancies shall be deposited with the Secretary of State. The copy of the election computer vote count program shall be received by the Secretary of State no later than 5 p.m. on the seventh day before the election. (b) If the election computer vote count program is modified or altered after the submission specified in subdivision (a), the elections official immediately shall deposit the subsequent program no later than 12 p.m. on the day of the election. (c) The Secretary of State shall hold the deposited programs for a period of not less than six months, at which time the program shall be returned to the elections official. (1) The elections official shall preserve the returned program for a period of 16 months. (2) The programs deposited in accordance with this section shall be used only for a recanvass of the vote, an official recount, court action, or for logic and accuracy tests required by the Secretary of State. (3) Any tape, diskette, cartridge, or other magnetic or electronic storage medium containing the vote count program submitted pursuant to this section shall be maintained by the Secretary of State in a secure location when not in use for an official purpose specified in paragraph (2). (d) The Secretary of State may, by mandamus or other appropriate proceeding, require and compel the county elections officials to submit the computer vote count program specified in subdivision (a). Venue for a proceeding under this section shall be exclusively in Sacramento County.