(a) Each eligible natural grass sod producer that has sold natural grass sod products in the United States during the representative period is eligible to vote in the initial referendum or subsequent referenda and shall be entitled to cast only one ballot in any referenda.

(b) Proxy voting is not authorized, but an officer or employee of an eligible natural grass sod producer, or an administrator, executor, or trustee of an eligible natural grass sod producer may cast a ballot on behalf of such entity. Any individual so voting in a referendum shall certify that such individual is an officer or employee of the eligible natural grass sod producer, or an administrator, executive, or trustee of the eligible natural grass sod producer and that such individual has the authority to take such action. Upon request of the referendum agent, the individual shall submit adequate evidence of such authority.

(c) All ballots are to be cast by mail, electronic mail, electronic voting through a smartphone application or website, sending ballots to a central location by mail ballot or through electronic mail, or by any other means set forth by the Department.