Chris Pappas holds a commanding lead in the New Hampshire Democratic Senate primary due to his record as a three-term U.S. representative, substantial fundraising advantage exceeding $15 million, and endorsements from party figures including Kamala Harris and retiring Sen. Jeanne Shaheen. The open-seat contest, triggered by Shaheen’s decision not to seek a fourth term, features a clear ideological contrast with progressive challenger Karishma Manzur, who has narrowed the gap in recent University of New Hampshire polling to 47-34 percent through grassroots efforts. With the September 8 primary just days away, traders’ consensus reflects Pappas’s structural edges in organization and voter recognition over Manzur’s targeted appeal to younger and progressive voters. A late surge by Manzur or unusually high turnout among her base could still shift the outcome.