John Cowan leads trader consensus in the GA-11 Republican primary runoff market, reflecting his strong first-round performance in the May 19 open primary where he captured 42.6% of the vote compared to Rob Adkerson’s 21.7%. As the open seat contest for the deep-red northern Georgia district vacated by retiring Representative Barry Loudermilk, the runoff on June 16 pits Cowan, a neurosurgeon with prior congressional experience, against Adkerson, Loudermilk’s former chief of staff. A June debate between the finalists highlighted their contrasting records and policy priorities, reinforcing Cowan’s momentum entering election day. Minor candidates from the initial primary, including Tricia Pridemore, remain at negligible implied probabilities after elimination.