Chris Pappas holds a commanding lead in New Hampshire’s Democratic Senate primary due to his incumbency as a four-term U.S. representative, superior fundraising exceeding $13 million, and endorsements spanning party moderates and progressives, including from Sen. Jeanne Shaheen and Sen. Elizabeth Warren. These factors have sustained high name recognition and support among older and moderate Democratic primary voters. Karishma Manzur has narrowed the gap through grassroots organizing among younger and progressive voters, as seen in the late August UNH poll, yet other surveys and internal data continue to show Pappas ahead by wide margins. With the September 8 primary approaching, late shifts in turnout or unexpected events remain the main variables that could alter the outcome.