Raymond McKay holds a commanding lead in the Rhode Island Republican Senate primary because he is the only candidate with active organization, recent fundraising, and party ties as a former state central committee member and assembly president, while Allen Waters has shifted focus after launching an independent Providence mayoral bid in February 2026 following multiple unsuccessful prior runs. The September 9 primary date leaves limited time for any reversal, and trader consensus reflects the absence of competitive polling or endorsements for challengers. Late developments such as Waters re-engaging the Senate race, a major scandal, or unexpected endorsements could still alter the outcome before ballots are cast.