Elections Code section 9034 requires that once proponent(s) of a proposed initiative measure have gathered 25% of the number of signatures required (currently 155,803 for an initiative statute and 249,285 for a constitutional amendment) proponent(s) must immediately certify that they have done so under penalty of perjury to the Secretary of State.
Upon receipt of the certification, the Secretary of State must provide copies of the proposed initiative measure and the circulating title and summary to the Senate and the Assembly. Each house is required to assign the proposed initiative measure to its appropriate committees and hold joint public hearings, at least 131 days before the date of the election at which the measure is to be voted on. However, the Legislature cannot amend the proposed initiative measure or prevent it from appearing on the ballot.
For initiative petitions filed between August 1, 2020, and December 31, 2020, please see Executive Order N-76-20 extending county reporting deadlines.