The New Hampshire Senate candidates for the 2026 election are now set for the general-election campaign, following the September 8 primary contests that selected Democrat Chris Pappas and Republican John E. Sununu as their parties’ nominees. The two candidates are competing for an open U.S. Senate seat after longtime Democratic Sen. Jeanne Shaheen decided not to seek another term.
The contest has quickly become one of the most closely watched Senate races of the 2026 election cycle. Pappas enters the general election as a four-term member of the U.S. House, while Sununu is a former U.S. senator seeking a return to the chamber after more than a decade away from elected federal office.
The general election will take place on November 3, 2026.
Why the New Hampshire Senate Seat Is Open
The 2026 race is different from a typical Senate reelection contest because there is no incumbent candidate seeking another term.
Jeanne Shaheen, a Democrat who has represented New Hampshire in the Senate since 2009, announced that she would not pursue a fourth term. Her retirement created an open-seat contest and immediately attracted attention from both national parties.
Shaheen’s decision also changed the political landscape for candidates considering the race. Instead of challenging an incumbent with an established statewide organization and voting record, candidates had the opportunity to compete for a seat with no incumbent on the November ballot.
That opening ultimately produced competitive Democratic and Republican primaries.
With those contests now complete, voters are preparing for a direct general-election campaign between Pappas and Sununu, along with candidates running outside the two major parties.
Chris Pappas Wins Democratic Nomination
Chris Pappas secured the Democratic nomination on September 8.
Pappas has represented New Hampshire’s 1st Congressional District in the U.S. House since 2019. Before entering Congress, he served in state and local government and developed a long political career in New Hampshire.
His Democratic primary opponents included Karishma Manzur, David Jarvis, Maxwell Saal and John Vail.
Pappas entered the primary as the most established candidate in the Democratic field. His congressional experience gave him a statewide record to campaign on, while his opponents sought to present alternative approaches to issues facing New Hampshire and the country.
After winning the nomination, Pappas shifted immediately toward the November campaign.
His campaign has emphasized affordability, health care, Social Security, Medicare, Medicaid, reproductive rights and support for small businesses. His congressional record is likely to remain an important part of the general-election discussion as voters examine his experience and policy positions.
Pappas is also a Manchester native, giving him a long-standing connection to the state that he hopes to carry into the statewide campaign.
John E. Sununu Returns to the Senate Race
John E. Sununu won the Republican nomination and will face Pappas in November.
Sununu is not new to federal politics. He served in the U.S. House beginning in 1997 and later represented New Hampshire in the U.S. Senate from 2003 through 2009.
His return to the political arena has attracted substantial attention because of his previous Senate experience and his family’s long history in New Hampshire politics.
Sununu is the son of former New Hampshire Gov. John H. Sununu and the brother of former Gov. Chris Sununu. Both are prominent figures in the state’s Republican political history.
The Republican primary featured several candidates, including former Massachusetts Sen. Scott Brown. Sununu ultimately won the nomination, setting up a general-election matchup between two candidates with substantial experience in federal politics.
Sununu’s previous Senate record will be closely examined during the campaign. His time away from elected office is also likely to be part of the conversation as voters consider his return to Washington.
The Democratic and Republican Primaries
The September primary was the decisive stage for the two major parties.
On the Democratic side, Pappas defeated Manzur, Jarvis, Saal and Vail. His victory allowed him to move directly into the general election with the backing of the state’s Democratic primary voters.
The Republican field was larger. Sununu competed against Brown, Tom Alciere, Sky Danley, Andy Martin, Mary Maxwell, Richard A. McMenamon II and Sabrina Ann Smith.
Sununu emerged from that field as the Republican nominee.
The results effectively transformed the race from two crowded primary contests into a much smaller November field centered on Pappas and Sununu.
Other Candidates in the Race
The November contest is not limited to the Democratic and Republican nominees.
Independent and third-party candidates are also part of the broader Senate field. Tim Harris, Edmond J. Laplante Jr., Jeanne Logan Morrow and Christine Lopez are among those listed in connection with the general election.
Laplante is associated with the Constitution Party as well as an independent designation.
Third-party and independent campaigns can introduce additional issues and perspectives into a statewide election. Their presence also means voters will have choices beyond the two major-party nominees.
The final ballot is an important distinction from the earlier primary field because several candidates who appeared in the primary elections are no longer competing in the November contest.
What Happened With Aaron Day?
Aaron Day’s campaign encountered a complicated ballot-access dispute during the election season.
Day, an independent Senate candidate, challenged the state’s earlier decision concerning his candidacy. A federal court later ordered the state to place him on the November ballot if he met the remaining eligibility requirements.
However, New Hampshire Secretary of State David Scanlan subsequently said Day would not appear on the general-election ballot because his nomination papers were submitted after the applicable deadline.
The dispute illustrates how candidate eligibility can continue to change even after court proceedings. For voters following the race, the officially recognized ballot is the most important reference point as Election Day approaches.
Key Issues Likely to Shape the Campaign
The New Hampshire Senate campaign is expected to cover a wide range of national and state-related issues.
Cost of Living
Affordability is one of the major themes already being emphasized in the campaign.
Housing costs, health insurance, energy expenses and everyday household costs remain important concerns for voters. Both campaigns are expected to present different approaches to the federal government’s role in addressing those pressures.
Health Care
Health care is another major issue.
The debate includes the future of Medicare and Medicaid, prescription drug costs, insurance affordability and access to medical care.
Pappas has specifically highlighted protecting major federal health programs as part of his campaign message.
Social Security and Medicare
Federal retirement programs are likely to receive significant attention during the campaign.
Social Security and Medicare affect millions of Americans and are especially important to older voters. Candidates’ records and statements regarding the future of these programs will give voters information for comparing their approaches.
Reproductive Rights
Reproductive policy remains a major political issue in New Hampshire and nationally.
Democrats have made reproductive freedom a central campaign topic, while Republican candidates have generally emphasized different approaches to abortion policy and federal involvement.
The issue could become especially important among voters who consider abortion policy a major factor in federal elections.
Immigration
Immigration and border policy are also expected to feature in the campaign.
The candidates have different party affiliations and different records on national policy questions. Federal immigration enforcement, border security and legal immigration could all receive attention during debates and advertising.
Federal Spending and Taxes
Questions about government spending, taxes and the federal deficit are another likely area of disagreement.
Sununu’s previous congressional record provides voters with an established record to examine, while Pappas has a more recent congressional voting history.
The campaign will give voters an opportunity to compare those records and the candidates’ current proposals.
A Race With National Attention
The New Hampshire Senate election has attracted national attention because it involves an open seat and could become relevant to the balance of power in Washington.
National political organizations have already shown interest in the contest. Both parties view New Hampshire as an important part of their broader Senate strategy.
The race is also receiving significant financial attention. Campaign fundraising and outside spending are expected to increase as the November election approaches.
National involvement can bring additional advertising and resources to the state, but the final campaign will still focus heavily on issues affecting New Hampshire voters.
What the Candidates Bring to the General Election
The backgrounds of the two major-party nominees are notably different.
Pappas is a sitting member of the House and has spent the past several years representing New Hampshire in Washington. His campaign can point to recent congressional votes and legislative work.
Sununu, by contrast, is a former senator with experience in both chambers of Congress. His previous Senate service gives him an established record, but his return to electoral politics comes after a substantial period away from the Senate.
That difference will likely shape how the two campaigns present themselves.
Pappas can argue from the perspective of current congressional experience, while Sununu can draw on his previous Senate tenure and broader history in federal politics.
The Importance of New Hampshire Voters
New Hampshire is a small state by population, but its political importance is considerably larger than its size might suggest.
The state has a history of closely contested elections and independent-minded voters. Candidates from both parties regularly compete for voters who do not consistently support one political party.
That makes statewide campaigning particularly important.
The November campaign will likely involve extensive visits to communities throughout the state, television and digital advertising, fundraising events and efforts to reach undecided and independent voters.
What Happens Between Now and Election Day?
The primary election has ended, but the most visible part of the Senate campaign is only beginning.
The candidates now have several weeks to introduce themselves to the full electorate. Campaign messages will become more focused, debates and public appearances will receive greater attention, and national political organizations are likely to increase their involvement.
Voters can expect additional information about candidate positions, campaign spending and endorsements as Election Day approaches.
The candidates’ previous records will also receive greater scrutiny. For Pappas, that means his House voting history and congressional work. For Sununu, it includes his earlier service in the House and Senate.
Independent candidates will have their own opportunity to communicate their positions and distinguish themselves from the major-party nominees.
New Hampshire Senate Candidates and the November Election
The general-election field is now taking shape, with Chris Pappas representing the Democratic Party and John E. Sununu representing the Republican Party.
The presence of independent and third-party candidates gives voters additional options, while the open nature of the seat makes the election particularly significant.
The campaign will unfold against the larger backdrop of the 2026 midterm elections, but New Hampshire’s Senate contest has its own distinct history and issues.
The retirement of Shaheen ensures that a new senator will represent the state beginning with the next term. Voters will ultimately decide whether that senator is Pappas, Sununu or another candidate on the November ballot.
When Is the New Hampshire Senate Election?
The general election is scheduled for November 3, 2026.
The September 8 primary determined the Democratic and Republican nominees. The period between the primary and general election now gives the campaigns an opportunity to appeal to the entire electorate.
Voters should check official state election information for registration requirements, polling locations, absentee voting information and final ballot details as Election Day gets closer.
What to Watch in the Final Campaign
Several developments will be worth following during the remaining weeks of the campaign.
Fundraising totals can indicate how much financial support each campaign has available for advertising and voter outreach. Candidate debates can provide voters with opportunities to compare their positions directly. Advertising campaigns will also increase as political organizations attempt to define the candidates for voters.
Polling may provide snapshots of voter opinion, but individual surveys can change and should be considered in the context of methodology, sample size, field dates and margin of error.
The most important development remains the November vote itself.
For New Hampshire voters, the race offers a choice among candidates with different political backgrounds, party affiliations and policy priorities. The open seat also guarantees a change in representation after Shaheen’s departure.
As the campaign moves toward Election Day, attention will increasingly focus on how Pappas and Sununu present their records, priorities and plans for representing New Hampshire in the U.S. Senate.