Lindsey Graham's incumbency and proven dominance in South Carolina GOP primaries anchor his 83.5% implied probability as the Republican Senate primary frontrunner, bolstered by superior fundraising exceeding $10 million and strong establishment support. Recent challenger announcements—Paul Dans (10%), ex-Project 2025 head appealing to MAGA voters with anti-incumbent rhetoric, and Mark Lynch (7%), a businessman emphasizing fiscal conservatism—have stirred limited buzz but failed to dent Graham's lead amid scant polling and his history of crushing primary foes by 20+ points. Thomas Murphy trails at 0.3% with minimal visibility. Traders weigh Graham's institutional edge against early anti-establishment momentum, with the June 2026 primary as the next catalyst.
Experimental AI-generated summary referencing Polymarket data · UpdatedSouth Carolina Republican Senate Primary Winner
South Carolina Republican Senate Primary Winner
Lindsey Graham 84%
Paul Dans 10%
Mark Lynch 7.1%
Thomas Murphy <1%
$32,390 Vol.
$32,390 Vol.
Lindsey Graham
84%
Paul Dans
10%
Mark Lynch
7%
Thomas Murphy
<1%
Lindsey Graham 84%
Paul Dans 10%
Mark Lynch 7.1%
Thomas Murphy <1%
$32,390 Vol.
$32,390 Vol.
Lindsey Graham
84%
Paul Dans
10%
Mark Lynch
7%
Thomas Murphy
<1%
If no 2026 South Carolina Republican Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the South Carolina Republican party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Sep 15, 2025, 3:40 PM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...Lindsey Graham's incumbency and proven dominance in South Carolina GOP primaries anchor his 83.5% implied probability as the Republican Senate primary frontrunner, bolstered by superior fundraising exceeding $10 million and strong establishment support. Recent challenger announcements—Paul Dans (10%), ex-Project 2025 head appealing to MAGA voters with anti-incumbent rhetoric, and Mark Lynch (7%), a businessman emphasizing fiscal conservatism—have stirred limited buzz but failed to dent Graham's lead amid scant polling and his history of crushing primary foes by 20+ points. Thomas Murphy trails at 0.3% with minimal visibility. Traders weigh Graham's institutional edge against early anti-establishment momentum, with the June 2026 primary as the next catalyst.
Experimental AI-generated summary referencing Polymarket data · Updated



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