Chris Pappas commands overwhelming trader consensus at 89% implied probability to win New Hampshire's Democratic U.S. Senate primary on September 10, driven by his status as the three-term incumbent U.S. Representative from NH-01 with strong fundraising exceeding $2 million and consistent double-digit leads in recent polls from Granite State Poll and others. Key endorsements from EMILY's List, retiring Sen. Jeanne Shaheen's allies, and local unions have solidified his frontrunner position since late July, while Karishma Manzur lingers at 5.6% amid limited visibility and resources as a lesser-known challenger. Absent a late-breaking scandal or surge in turnout for underdogs, Pappas's path appears clear in this low-profile primary.