Full Breakdown
New Hampshire Senate Seat Turns Toss-Up as Former GOP Senator Faces Democratic Representative
By Drooid · · How we work
Race Overview
The contest to fill the seat of retiring Democrat Jeanne Shaheen has shifted from a “Lean Democratic” outlook to a “Toss Up,” according to the Cook Political Report. Former Republican Senator John Sununu and Democratic U.S. Representative Chris Pappas secured their parties’ nominations earlier this month and will meet in the November general election.
Polling Trends and Funding
Recent surveys show a tightening gap. A University of New Hampshire poll conducted from September 9-11, 2026 found Sununu at 45 % and Pappas at 43 % of likely voters, with a 3.15 % margin of error. An earlier Saint Anselm College poll placed Pappas ahead 48 % to 41 %. RealClearPolitics’ average lists Pappas at 45.5 % and Sununu at 41.5 %, while a September co-efficient survey reported both candidates tied at 46 % and 9 % undecided. Favorability ratings show Pappas at 37 % favorable versus 51 % unfavorable, and Sununu at 41 % favorable versus 47 % unfavorable.
National Republican groups are outspending pro-Pappas allies by roughly a two-to-one margin, creating an estimated $20 million advantage for the GOP in New Hampshire, per the Cook Political Report.
Analyst Commentary
Craig Agronoff, a political professor at Florida Atlantic University, described the tightening race as a “red flag” for Democrats, noting the combination of a well-known Republican candidate, an open Democratic seat, narrowing surveys, and inflows of outside Republican money. He cautioned that while the state has not elected a Republican senator since 2010, the contest will demand significant Democratic resources.
Implications for Senate Control
The New Hampshire race arrives amid a broader midterm environment where the president’s party historically loses seats. Republicans currently hold narrow majorities in both chambers, and former Vice President Kamala Harris won the state by less than 3 % in the 2024 presidential election. As both parties vie for national attention, the outcome will influence the balance of power in the Senate and shape strategic allocations of campaign funds in the final weeks of the election cycle.