Mark Smith holds a commanding lead in the South Carolina 1st Congressional District Republican primary as the sole sitting state representative in the field, bolstered by superior fundraising totals and consistent first-place showings in recent straw polls and internal surveys. The open-seat contest to succeed Nancy Mace, who is seeking the governorship, features nine other candidates including Charleston County Councilwoman Jenny Costa Honeycutt, with debates in late May highlighting differences on spending, redistricting, and local priorities. Smith's established Lowcountry legislative record and endorsements have consolidated early support ahead of the June 9 vote, while the remaining contenders trail with lower name recognition and resources. Trader consensus reflects these structural advantages in positioning Smith as the frontrunner.