(a) Each person who is an eligible producer or importer, as defined in this subpart, at the time of the referendum and during the representative period, shall be entitled to cast only one ballot in the referendum. However, each producer in a landlord-tenant relationship or a divided ownership arrangement involving totally independent entities cooperating only to produce mushrooms, in which more than one of the parties is a producer, shall be entitled to cast one ballot in the referendum covering only such producer's share of the ownership.
(b) Proxy voting is not authorized, but an officer or employee of an eligible corporate producer or importer, or an administrator, executor, or trustee of an eligible producing or importing entity may cast a ballot on behalf of such producer or importer entity. Any individual so voting in a referendum shall certify that such individual is an officer or employee of the eligible producer or importer, or an administrator, executor, or trustee of an eligible producing or importing entity, 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) Ballots are to be cast by mail or fax.