John Cowan leads the GA-11 Republican primary runoff market at 66.5% after securing 42.6% in the May 19 primary, well ahead of Rob Adkerson’s 21.7%. The June 16 runoff pits the neurosurgeon and 2020 candidate against Loudermilk’s former chief of staff, who holds the retiring incumbent’s endorsement. Recent debates have centered on economic policy, tariffs, and alignment with national Republican priorities, with limited outside spending or endorsements shifting the contest. Trader consensus reflects Cowan’s stronger primary showing and broader name recognition in the open-seat race for the safely Republican district.