Chris Pappas holds a commanding lead in the New Hampshire Democratic Senate primary due to his established record as a two-term U.S. representative, strong name recognition across the state, and overwhelming advantages in fundraising and organization. Multiple polls through late August showed him ahead of progressive challenger Karishma Manzur by double-digit margins, supported by endorsements from retiring Sen. Jeanne Shaheen, Sen. Maggie Hassan, and other party figures, while Manzur draws backing mainly from younger and left-leaning voters focused on issues like foreign policy and campaign finance. With the September 8 primary just days away, traders see limited scope for an upset unless progressive turnout surges dramatically or an unforeseen late development alters the race dynamics.