Jenny Costa Honeycutt and Mark Smith advanced from the June 9 Republican primary for South Carolina’s 1st Congressional District, with Honeycutt at roughly 22% and Smith near 18% in a crowded field that included Sam McCown, Alex Pelbath, Jay Byars, Logan Cunningham, and others. No candidate reached a majority, triggering a June 23 runoff between the top two finishers. Trader pricing on the primary winner reflects this outcome, with elevated odds for Smith and Honeycutt driven by their runoff qualification and recent pre-runoff debates and local interviews. Lower probabilities for non-advancing candidates align with their primary vote shares and elimination. The short window to the runoff leaves room for shifts based on turnout and final messaging on local issues such as affordability and fiscal policy.