California Code, Elections Code - ELEC § 19208

The governing board may provide for the payment of the cost of the voting system equipment in any manner and by any method as it deems best for local interests, and also may for that purpose issue bonds, certificates of indebtedness, or other obligations that shall be a charge on the county or city.  The bonds, certificates, or other obligations may be issued with or without interest, payable at any time as the authorities may determine, but shall not be issued or sold at less than par.  The governing board may enter into lease agreements or lease-purchase agreements for the use of equipment.