Some households did not receive the pamphlet at all, while others received multiple copies, Mr. Hill's office said. All local voters did receive pamphlets describing measures and elections local to the county, such as the races for treasurer and coroner, said county Elections Manager David Tom.
Mr. Tom said he had no information as to how many state guides were missing or which parts of the county were affected.
The Secretary of State's office has not yet responded to a request for details.
Voters can opt out of receiving the state guide, but current law requires county officials to mail a local guide to every registered voter.