Prior to 1911, only the Legislature could place an initiative on the ballot for direct voting; this mechanism is still used, mostly for bond measures. To appear on the ballot:
Any of these can become law if approved by a majority of the electorate.
After 1911, initiatives could be added to the ballot by citizens either directly or indirectly.
The more common type, drafted and placed on the ballot by citizen-proponents. Five basic steps:
Litigation may occur at various points during the above process or may ensue post-election. For a more detailed description of the process and timelines for getting an initiative qualified to appear on a statewide ballot see the California Secretary of State (Department of Elections) Initiative Guide.
From 1911 to 1966, the indirect initiative process allowed citizens to ask the Legislature to place a measure on the ballot (see A History of California Initiatives (2015) for more description). This option was seldom used—according to the California Secretary of State's report, Initiatives by Title and Summary Year, on only 4 occasions—and was abolished in 1966.
A referendum allows the electorate to veto (or to ratify) a law enacted by the Legislature (but urgency statutes, statutes calling elections, and statutes providing for tax levies or appropriations cannot be challenged via referendum). A recall election allows for removal of elected state or local officials. As with citizen-sponsored initiatives, both referendum and recall require circulation of a petition, validation of a minimum number of petition signatures, and preparation of ballot pamphlet arguments for qualifying measures.