To find intent for an initiative, which results from the power of the voters to propose and adopt statutes and amendments to the Constitution of California, you will need to review the voter pamphlets. The Hastings College of the Law as two searchable online databases: California Ballot Propositions (1911-present) and California Ballot Initiatives (1912-present). In addition, the L.A. County Law Library has an excellent online compilation of ballot proposition information from 1980-present, which includes summaries of proposed measures, notes on whether the measure was passed, and citations to the sections affected. Printed ballot information is also available in the UCLA Law Library on microfiche.
California. Secretary of State. Amendments to the Constitution and Proposed Statutes/Ballot Pamphlets. (1883- )
Hastings Law Library databases -- including ballot pamphlets: