California Code, Elections Code - ELEC § 9094

(a) The Secretary of State shall mail state voter information guides to voters before the election at which measures contained in the state voter information guide are to be voted on unless a voter has registered fewer than 29 days before the election. The mailing shall commence not less than 40 days before the election and shall be completed no later than 21 days before the election for those voters who registered on or before the 60th day before the election, and shall be completed no later than 10 days before the election for those voters who registered after the 60th day before the election and before the 28th day before the election. The Secretary of State shall mail one copy of the state voter information guide to each registered voter at the postal address stated on the voter's affidavit of registration, or the Secretary of State may mail only one state voter information guide to two or more registered voters having the same postal address.

(b) The county elections official shall mail a state voter information guide to any person requesting a state voter information guide. Three copies, to be supplied by the Secretary of State, shall be kept at every polling place, while an election is in progress, so that they may be freely consulted by the voters.