Incumbent Sen. Lindsey Graham commands 83.5% trader consensus to win South Carolina's Republican Senate primary on June 9, 2026—or a potential June 23 runoff if no candidate exceeds 50%—due to his overwhelming fundraising ($19 million raised, $13 million cash on hand), Trump endorsement, and long-held incumbency advantage in the deep-red state. Challengers Paul Dans (8.5%), Project 2025 architect emphasizing conservative reform, and Mark Lynch (4.8%), Greenville businessman attacking Graham's foreign policy, have gained visibility from recent sponsored polls like Pulse Opinion Research (March 11-17) showing Graham at 41%, Lynch 21%, and Dans 11% amid 22% undecideds, plus Dans' new ad campaign. Thomas Murphy (0.2%) shows negligible support. No independent polls or major endorsements have shifted the race, underscoring incumbency resilience despite primary challenges.
Experimental AI-generated summary referencing Polymarket data · UpdatedSouth Carolina Republican Senate Primary Winner
South Carolina Republican Senate Primary Winner
Lindsey Graham 84%
Paul Dans 9%
Mark Lynch 4.8%
Thomas Murphy <1%
$51,006 Vol.
$51,006 Vol.
Lindsey Graham
84%
Paul Dans
9%
Mark Lynch
5%
Thomas Murphy
<1%
Lindsey Graham 84%
Paul Dans 9%
Mark Lynch 4.8%
Thomas Murphy <1%
$51,006 Vol.
$51,006 Vol.
Lindsey Graham
84%
Paul Dans
9%
Mark Lynch
5%
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...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.
Resolver
0x2F5e3684c...Incumbent Sen. Lindsey Graham commands 83.5% trader consensus to win South Carolina's Republican Senate primary on June 9, 2026—or a potential June 23 runoff if no candidate exceeds 50%—due to his overwhelming fundraising ($19 million raised, $13 million cash on hand), Trump endorsement, and long-held incumbency advantage in the deep-red state. Challengers Paul Dans (8.5%), Project 2025 architect emphasizing conservative reform, and Mark Lynch (4.8%), Greenville businessman attacking Graham's foreign policy, have gained visibility from recent sponsored polls like Pulse Opinion Research (March 11-17) showing Graham at 41%, Lynch 21%, and Dans 11% amid 22% undecideds, plus Dans' new ad campaign. Thomas Murphy (0.2%) shows negligible support. No independent polls or major endorsements have shifted the race, underscoring incumbency resilience despite primary challenges.
Experimental AI-generated summary referencing Polymarket data · Updated



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