Chris Pappas holds a commanding lead in the September 8 New Hampshire Democratic Senate primary due to his established profile as a sitting U.S. Representative, endorsements from retiring Sen. Jeanne Shaheen and other party figures, and a massive fundraising advantage exceeding $13 million compared to Karishma Manzur's roughly $207,000. Polling from June showed Pappas maintaining majority support among likely Democratic voters despite some narrowing among younger and left-leaning blocs favoring the progressive scientist and activist Manzur. Recent campaign activity, including Manzur's multi-county tour and media appearances, has highlighted policy contrasts on issues like healthcare and campaign finance but has not closed the structural gap. A late shift in turnout or unexpected external events could theoretically alter the outcome before primary day.