Chris Pappas holds a commanding lead in the New Hampshire Democratic Senate primary due to his established record as a four-term U.S. representative, superior fundraising exceeding $4 million in cash on hand, and broad support among party voters in an open-seat contest following Jeanne Shaheen’s retirement. Recent University of New Hampshire polling shows him ahead by double digits despite some narrowing from progressive challenger Karishma Manzur, who has gained traction on issues like Medicare for All and campaign finance reform while securing endorsements from progressive groups. The September 8 primary timing limits opportunities for major shifts, and trader consensus at 96% for Pappas reflects his structural advantages in name recognition and resources. A late surge by Manzur among younger or left-leaning voters remains possible but faces significant barriers from Pappas’s organizational edge.