Mark Smith leads the SC-01 Republican primary market at 49.5% as the only sitting state representative in the field, bolstered by stronger fundraising totals and higher name recognition ahead of the June 9 primary. Alex Pelbath trails at 16.5% despite criticism of Smith during the May 28 Hilton Head debate over legislative voting records and redistricting abstention. Lower-tier candidates including Jack Ellison, Sam McCown, and Jay Byars register single-digit shares amid a crowded field of ten Republicans vying for the open seat. Trader positioning reflects Smith's structural advantages in an open primary where local elected experience and campaign resources typically consolidate support early. No major endorsements or new polling have emerged in the past week to alter the consensus.