Michael Minogue's commanding 70% victory at the Massachusetts Republican Party convention on April 26 secured the party's endorsement and propelled trader consensus to 78% implied probability for the September 1 Republican gubernatorial primary, bolstered by his self-funding advantage—nearly $1 million more cash on hand—and recent internal polling showing continued strength among primary voters. Mike Kennealy's suspension of his campaign days after failing the 15% delegate threshold has collapsed his odds to 0.3%, narrowing the field. Brian Shortsleeve holds at 11.6% amid GOP insider pressure to drop out and consolidate behind Minogue, though he vows to contest the primary ballot, emphasizing voter choice over convention delegates.