Nancy Lacore holds the leading position in the South Carolina 1st Congressional District Democratic primary, scheduled for June 9, with traders assigning her a 71.5% implied probability. Her substantial fundraising edge, including over $1 million raised and strong cash reserves compared to other contenders, combined with her background as a former U.S. Navy Reserve chief, has driven this consensus in a crowded field for the open seat. Mac Deford, at 12.5%, benefits from prior primary experience and some local party support but trails in resources. A recent candidate debate addressed redistricting and Lowcountry issues, though no major shifts have altered the frontrunner dynamic ahead of the vote.