The district boards in each election district shall consist of four members, except that where electronic voting systems are in use any election district in which there are more than 900 registered voters the district board shall consist of six members. The members shall be appointed by the county board of the county in which such election district is located, in the manner hereinafter provided.
In election districts in which the primary language of 10% or more of the registered voters is Spanish, the county board shall appoint two additional members who shall be of Hispanic origin and fluent in Spanish.