South Carolina’s 4th congressional district remains a solidly Republican seat with an R+11 Partisan Voter Index and consistent historical margins favoring the GOP. Incumbent William Timmons secured the Republican nomination by a wide primary margin and held a substantial fundraising edge over Democratic nominee Courtney McClain. Forecasters rated the contest Safe or Solid Republican ahead of the November 3, 2026 general election. Live results show Timmons at approximately 51.7 percent to McClain’s 45.6 percent, producing a roughly 6-point margin that aligns with the market’s dominant 5-10 percent outcome. Trader consensus on this narrow band reflects the district’s structural lean and the absence of major late-cycle shifts. Final certification of provisional and absentee ballots could still adjust the precise margin, though current counts make movement outside the 5-10 percent range unlikely.