Mark Smith holds a commanding lead in the South Carolina 1st Congressional District Republican primary as the June 9 vote nears, driven by his incumbency as a state representative from District 99, extensive local endorsements, and strong fundraising relative to challengers. A recent straw poll and candidate forum underscored his edge over Alex Pelbath and others, while a late-May debate highlighted differences in legislative records and policy priorities among the field of local officials and first-time candidates. Traders reflect this positioning through elevated odds for Smith, with the crowded ballot and short timeline limiting momentum shifts for lower-polling contenders ahead of primary day.