Lindsey Graham’s death on July 11, 2026, one month after he secured the Republican nomination in the regular June 9 primary, has triggered a special primary set for mid-August under South Carolina law. This sudden vacancy has produced a crowded field with no established frontrunner, as multiple sitting and former members of Congress, statewide officials, and prior candidates weigh bids. Trader consensus remains tightly clustered because filing deadlines are imminent, name recognition and fundraising capacity are still fluid, and no major endorsements or polling have yet consolidated support behind any single contender. Developments that could shift probabilities include formal announcements from high-profile figures such as Nancy Mace or Mark Lynch, early polling releases, or alignment by party leaders that narrows the field before the August vote.