California Code, Elections Code - ELEC § 2191

(a) Upon request, the elections official shall compile a voter list or file, by precinct, of all persons who voted in previous elections. This information shall be compiled in conjunction with the purge of voter registration files conducted pursuant to Article 2 (commencing with Section 2220) of Chapter 3.

(b) Information compiled pursuant to this section shall include the information that is required to appear in the index as set forth in Section 2183.

(c) Any person, candidate, or committee who is entitled to obtain a copy of any information contained in this article shall, upon written request to the elections official, be entitled to obtain the voter list or file compiled pursuant to this section. The elections official shall inform any recipient of this information whether the voter list or file includes a voting history of vote by mail voters. The elections official may require the payment of a fee not to exceed the cost of duplicating the information as a condition to furnishing the information contained in this section.