1. Except as otherwise provided in this section, a person shall not mark and sign a mail ballot on behalf of a voter or assist a voter to mark and sign a mail ballot pursuant to the provisions of NRS 293.269911 to 293.269937, inclusive.
2. At the direction of a voter who has a physical disability, is at least 65 years of age or is unable to read or write, a person may mark and sign a mail ballot on behalf of the voter or assist the voter to mark and sign a mail ballot pursuant to this section.
3. If a person marks and signs a mail ballot on behalf of a voter pursuant to this section, the person must indicate next to his or her signature that the mail ballot has been marked and signed on behalf of the voter.
4. If a person assists a voter to mark and sign a mail ballot pursuant to this section, the person or the voter must include on the return envelope his or her name, address and signature.