R.I. Gen. Laws § 17-25-26: Equal apportionment of expenditures for joint advertisements.

Any expenditure jointly made by any two (2) or more candidates for any newspaper, radio, or television advertisement primarily benefiting the candidate shall be attributed to and apportioned equally among those candidates who are clearly identified in that advertisement. The apportionments shall constitute campaign expenditures subject to all reporting requirements of this chapter and shall be counted toward any total campaign expenditures limit that may apply to each or any of the candidates.