Incumbent Lindsey Graham leads Polymarket trader consensus at 83.5% for the South Carolina Republican Senate primary, bolstered by his substantial fundraising advantage—over $10 million raised in recent cycles—and proven primary victories in a deep-red state where incumbency carries strong weight. Paul Dans, former director of Project 2025, surged to 10% following his July 2024 announcement challenging Graham from the right, appealing to MAGA skeptics critical of the senator's Ukraine aid support and bipartisan deals. Mark Lynch holds 7% amid grassroots buzz but lacks Dans' national profile, while Thomas Murphy trails at 0.3% as a fringe contender. With the June 2026 primary over a year away, odds reflect early name recognition and donor momentum, though fundraising reports and endorsements could shift dynamics.