South Carolina: GOP Senate Runoff to Replace Graham

The runoff to determine the Republican nominee for the seat once held by the late Senator Lindsey Graham has become a proxy fight over Trump loyalty, with a climate-focused outside group unexpectedly injecting itself into the argument. Rep. Ralph Norman, a Republican, faces Darline Graham, Lindsey Graham's sister, in the Senate runoff. The Invest in Tomorrow Coalition, a PAC organized around climate policy, has run ads attacking Norman for insufficient allegiance to Trump, pointing to his 2024 endorsement of a different candidate as evidence. The involvement of a climate-oriented group attacking from the right on loyalty grounds, rather than on environmental policy, underscores how outside spending in GOP primaries has increasingly organized around Trump alignment as the operative currency, regardless of a group's stated mission.

Norman has picked up an endorsement from former Governor Mark Sanford, a notable addition given Sanford's own complicated history with the state's Republican electorate. Graham, meanwhile, has faced scrutiny since a debate performance in which she acknowledged that national security was not her area of expertise — a notable admission for a candidate seeking a Senate seat historically associated with foreign policy given her brother's tenure on the Armed Services Committee. She has since secured an endorsement from Rep. Russell Fry, who made the move after his own elimination from a separate primary contest. Whether Fry's backing carries transferable value with his own base remains untested.

Whichever Republican emerges will face Democrat Annie Andrews, who has outraised both remaining candidates combined, reporting $10.8 million in total receipts. That fundraising advantage has not moved the fundamentals: Inside Elections and Cook both rate the race Solid R, while Sabato's Crystal Ball rates it Safe R. Andrews' war chest may signal seriousness of campaign infrastructure, but it has not altered outside assessments of the seat's partisan lean in a state where Republicans hold a substantial structural advantage.

South Carolina's 7th District and Down-Ballot Contests

South Carolina's 7th District, where Nancy Mace is not seeking re-election, features its own competitive Republican field. A Blueprint Polling survey completed July 28 showed Fry leading Democrat John Vincent 41-37 in the general election matchup, a margin inside the range where turnout and late spending could matter more than any single data point. The district carries a Likely R rating, giving Republicans a cushion but not a lock, particularly if Fry's Senate-runoff endorsement of Graham becomes a point of contention within his own primary coalition.

Beyond the marquee statewide contest, Oklahoma voters will weigh in on down-ballot House primaries in districts held by Republicans Tom Cole, Stephanie Bice and Frank Lucas — races that have drawn far less national attention but will shape the composition of the state's delegation. In South Carolina's 6th District, Democratic incumbent James Clyburn faces Republican challengers who are still in the early stages of building campaign war chests, a financial gap that typically favors incumbents in the district's later stages of the cycle.

Taken together, South Carolina's ballot this cycle offers a study in contrasts — a marquee Senate runoff drawing national money and attention, an open House seat with a genuine general-election contest, and down-ballot races where the fundamentals remain largely undisturbed. The outcome of the runoff will settle who carries the Graham name into November, but it will not settle whether that name still carries the same weight it once did.