Trader consensus currently assigns Robert F. Kennedy Jr. the highest probability for the 2028 Republican presidential nomination, followed by J.D. Vance and Marco Rubio. This reflects Kennedy’s established role in the administration and his Make America Healthy Again platform, which has sustained visibility among Republican voters. Vance’s position draws from his vice presidential incumbency and alignment with party leadership, while Rubio benefits from his secretary of state experience and foreign policy profile. Recent midterm results have shifted some probabilities, including upward movement for Ron DeSantis. The broad field and absence of formal declarations underscore the early stage of the contest, with primaries still more than a year away and outcomes subject to further political developments.