R.I. Gen. Laws § 17-20-14.1
Each local board shall be authorized to appoint one or more bipartisan pairs of supervisors in the manner that other bipartisan pairs of supervisors are appointed for each election, whose duty it shall be to attend each person who makes an application for a mail ballot under § § 17-20-2.1 and 17-20-2.2, who does not fall under the provisions of § 17-20-14, and who requests that a bipartisan pair of supervisors be sent by the board of canvassers to that person's place of residence for the purpose of supervising or assisting the mail voter in casting his or her vote. The bipartisan pairs of supervisors shall supervise the casting of votes by persons using the mail ballot at a place that preserves their secrecy and shall take acknowledgments , and jointly provide assistance, if requested, to assure proper marking, sealing, and mailing of ballots as voted. The failure or neglect of any local board to appoint these bipartisan pairs, or the failure or neglect of any pair to attend any place at which a mail voter's ballot may be used, or the marking, sealing, or mailing of ballots in the absence of any pair, shall not invalidate any ballot.
R.I. Gen. Laws § 17-20-14.1