Michael Minogue holds overwhelming trader support in the Massachusetts Republican gubernatorial primary due to his strong performance at the state party convention, where he secured roughly 70 percent of delegate votes for the endorsement, and a late-August UMass Amherst/WCVB poll showing him ahead of Brian Shortsleeve by a 53-26 margin among likely primary voters. Minogue, a former Abiomed CEO and combat veteran, has maintained broad advantages across GOP constituencies through substantial fundraising and organizational efforts, while Shortsleeve, the former MBTA acting general manager, and eliminated candidate Mike Kennealy—who endorsed Minogue—have failed to close the gap. With the September 1 primary just two weeks away, the market pricing reflects the limited remaining time for any reversal absent major unforeseen developments.