Nassau County Executive Bruce Blakeman commands trader consensus at 91% implied probability for the New York Republican gubernatorial primary on June 23, driven by his formal designation as the state GOP nominee at the February 2026 convention and Rep. Elise Stefanik's subsequent withdrawal from contention. No major challengers have gained traction amid the ongoing designating petition window, leaving minor candidates like Pat Hahn and David Tulley as longshots requiring thousands of valid signatures by early May deadlines. President Trump's recent endorsement further bolsters Blakeman's incumbency-like advantages in suburban strongholds. Upsets remain possible via a high-profile late entrant securing ballot access or unforeseen scandal, though historical primary patterns favor endorsed nominees in low-turnout contests.