Trader consensus assigns Robert F. Kennedy Jr. the highest implied probability for the 2028 Republican presidential nomination, followed by J.D. Vance and Marco Rubio, reflecting assessments of their national profiles, prior campaign experience, and positioning within party networks after the 2024 cycle. These odds capture early-stage evaluations of primary viability, potential endorsements, and alignment with key voting blocs ahead of the formal contest. With the nomination process still distant, the market remains sensitive to polling trends, official announcements, and any shifts in administration or congressional dynamics that could affect candidate trajectories. No major verifiable developments in the past 30 days have materially altered the current distribution.