New Hampshire voters head to the polls on Tuesday to select nominees for retiring Democratic Sen. Jeanne Shaheen’s seat, launching a high-stakes primary contest that shapes the national battleground for control of the United States Senate ahead of the November midterms.
Control of the upper chamber sits on a razor edge as voters across multiple states determine party nominees for the upcoming general election. Republicans enter the final stretch of President Donald Trump’s term defending a tight map, while Democrats push to expand the battleground amid sliding presidential approval ratings and persistent economic concerns.
National campaign spending for the midterm cycle is projected to exceed 3.4 billion dollars across all races, reflecting the immense stakes for judicial confirmations, cabinet appointments, and the remainder of the presidential agenda. Senate Majority Leader John Thune acknowledged the competitive terrain in an interview with regional media, noting that he does worry about holding the chamber.
New Hampshire Senate Primary Draws Moderate and Progressive Contenders
In New Hampshire, the race to succeed Shaheen features distinct ideological battles on both sides of the aisle. Rep. Chris Pappas faces a primary challenge from Karishma Manzur, a medical scientist and member of the Democratic Socialists of America. Shaheen has endorsed Pappas, a moderate who has represented the state’s 1st Congressional District since 2019 and serves as the first openly gay member of Congress from New Hampshire.
Manzur has campaigned on progressive policies including Medicare for All and removing money from politics.
On the Republican side, former Sen. John Sununu faces former Sen. Scott Brown. Sununu, who was defeated by Shaheen in 2008, carries the backing of President Trump and belongs to a prominent political family that includes a former governor and a popular former governor brother.
Expanding Battlegrounds and Escalating Spending in Key States
While traditional battlegrounds remain competitive, both parties are allocating resources to expanded maps. Senate Democratic Leader Chuck Schumer noted that the party has found new opportunities in states like Iowa and Texas, where voter enthusiasm has outpaced expectations from a year ago.
Primary turnout has risen during the Trump era as grassroots engagement intensifies. Grant Davis Reeher, a professor of political science at Syracuse University, observed that Democrats are experiencing more intense interest among primary voters, driven largely by media attention and energy on the left, though he noted it remains an open question whether that enthusiasm gap will extend into November.
That sentiment was echoed by Todd Belt, director of the Political Management Program at George Washington University, who pointed out that Democratic voters are highly motivated to challenge the administration. At the same time, Belt cautioned that lingering divisions from bruising primaries could complicate efforts to unify local parties behind moderate nominees.
Controversies Over Outside Spending and Policy Stances
Path to November Remains Fluid
As primary season concludes in key states, party strategists are pivoting rapidly toward the general election.
