(Warwick, RI)--The Rhode Island Republican Party is revoking its endorsement of a U.S. Senate candidate.The decision not to support Allen Waters, who is running against Democratic incumbent Jack Reed, is due to reports of Waters being involved in a domestic disturbance last year.RI GOP chairwoman Sue Cienki says Waters will still be able to run as a Republican if he gathers the required signatures, but he will not have the backing of the party.