Ralph Norman holds a commanding lead in trader expectations for Greenville County in South Carolina’s August 25 Republican Senate runoff, reflecting his decisive 40-23 percent primary victory there amid broader Upstate strength. Norman, the outgoing 5th District representative and House Freedom Caucus vice chair, outperformed across the region’s most populous counties by emphasizing his legislative record as a proven conservative. Darline Graham Nordone, the appointed incumbent and Lindsey Graham’s sister, carried most Midlands and Lowcountry counties statewide but trailed significantly in Greenville despite President Trump’s endorsement and heavy outside spending. Early voting data and historical county patterns reinforce the regional divide, with limited time remaining for shifts before polls close. A Norman county win would align with consistent Upstate preferences seen in recent primaries, though unusually high turnout favoring Nordone’s name recognition could narrow margins in this compressed contest.