Any voter who requires assistance to vote by reason of blindness, disability, or inability to read or write may be given assistance by a person of the voter's choice, other than the voter's employer or agent of that employer or officer or agent of the voter's union. The Secretary of the State Election Board shall prescribe procedures to be used that require such voters to swear or affirm that such assistance is required and that require the person providing such assistance to swear or affirm that the voter's ballots are being voted in accordance with the voter's wishes.