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2026 United States Senate election in New Hampshire

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2026 United States Senate election in New Hampshire
Flag of New Hampshire.svg
←  2020
November 3, 2026
2032 →
 
Party Democratic Republican
Incumbent U.S. senator

Jeanne Shaheen
Democratic



The 2026 United States Senate election in New Hampshire will be held on November 3, 2026, to elect a member of the United States Senate to represent the state of New Hampshire. Primary elections will be held on September 8, 2026. Incumbent three-term Democratic Senator Jeanne Shaheen declined to seek a fourth term. [1]

Contents

This will be the first open Senate election in New Hampshire since 2010, and the first for this seat since 1990. [a]

Background

New Hampshire is considered to be a slightly to moderately blue state at the federal level, with Kamala Harris carrying the state by roughly 3 percentage points in the 2024 presidential election. The state's congressional delegation has been entirely Democratic since 2017. However, Republicans control the governorship, both state legislative chambers, and a majority in the executive council. [2] [3]

Shaheen was first elected in 2008, defeating then-incumbent senator John Sununu in a rematch of 2002, and was re-elected in 2014 and 2020. [4] Republicans have not won a U.S. Senate race in New Hampshire since 2010. [5]

Democratic primary

Candidates

Declared

Declined

Endorsements

Karishma Manzur
State legislators
Organizations

Fundraising

Campaign finance reports as of December 31, 2025
CandidateRaisedSpentCash on hand
Chris Pappas (D)$6,552,817$3,722,790$3,237,611
Jared Sullivan (D)$93,914$28,448$65,565
Karishma Manzur (D)$70,157$56,475$13,681
Source: Federal Election Commission [35]

Polling

Aggregate polls

Source of poll
aggregation		Dates
administered		Dates
updated		Karishma
Manzur		Chris
Pappas		Jared
Sullivan		Undecided [b] Margin
270toWin [36] November 13–19, 2025January 1, 20268.0%60.5%3.5%29.0%Pappas +52.5%
Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Karishma
Manzur		Chris
Pappas		Jared
Sullivan		OtherUndecided
University of New Hampshire [37] January 15–19, 2026893 (LV)± 3.3%11%65%2%–22%
Saint Anselm College [38] November 18–19, 20251,015 (RV)± 3.1%8%64%2%–26%
University of New Hampshire [39] November 13–17, 2025521 (LV)± 4.3%8%57%5%–30%
University of New Hampshire [40] September 17–23, 2025508 (LV)± 4.3%14%65%–1%20%

Republican primary

Candidates

Declared

Withdrawn

Declined

Endorsements

Scott Brown
Executive branch officials
U.S. senators
Organizations
John E. Sununu
Executive branch officials
U.S. senators
Statewide officials
State legislators
Party officials
Organizations

Fundraising

Campaign finance reports as of December 31, 2025
CandidateRaisedSpentCash on hand
Scott Brown (R)$1,342,972$435,137$907,834
John Sununu (R)$1,356,653$233,736$1,122,917
Source: Federal Election Commission [35]

Polling

Aggregate polls

Source of poll
aggregation		Dates
administered		Dates
updated		Scott
Brown		John
Sununu		Other/Undecided
[b] 		Margin
RealClearPolitics [57] September 10, 2025 – January 19, 2026January 19, 202626.0%42.3%31.7%Sununu +16.3%
270toWin [36] November 13–19, 2025January 1, 202628.5%39.5%32.0%Sununu +11.0%
Average27.3%40.9%31.8%Sununu +13.6%
Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Scott
Brown		Dan
Innis		John
Sununu		OtherUndecided
University of New Hampshire [37] January 15–19, 2026967 (LV)± 3.2%25%–48%1% [d] 26%
Guidant Polling and Strategy (R) [58] [A] December 9–11, 2025353 (LV)–30%–49%–21%
Saint Anselm College [38] November 18–19, 20251,000 (RV)± 3.1%30%–39%–31%
University of New Hampshire [39] November 13–17, 2025593 (LV)± 4.0%27%–40%1%31%
September 25, 2025Innis withdraws from the race
University of New Hampshire [40] September 17–23, 2025555 (LV)± 4.2%19%7%42%4% [e] 28%
co/efficient (R) [59] September 10–12, 2025346 (LV)–23%8%40%5% [f] 24%
Saint Anselm College [60] August 26–27, 2025791 (RV)± 3.5%48%13%––39%

Independents

Candidates

Filed paperwork

  • Matt Giovonizzi [61]

Potential

  • Aaron Day, former chairman of the Free State Project and candidate for U.S. Senate in 2016 [62]

General election

Predictions

SourceRankingAs of
Inside Elections [63] Tilt DOctober 23, 2025
The Cook Political Report [64] Lean DOctober 14, 2025
Sabato's Crystal Ball [65] Lean DAugust 12, 2025
Race To The WH [66] Lean DFebruary 14, 2026

Polling

Chris Pappas vs. Scott Brown

Aggregate polls

Source of poll
aggregation		Dates
administered		Dates
updated		Chris
Pappas		Scott
Brown		Other/Undecided
[b] 		Margin
RealClearPolitics [67] October 9, 2025 – January 19, 2026January 28, 202648.3%39.0%12.7%Pappas +9.3%
Race to the WH [68] September 3, 2025 – January 21, 2026February 6, 202648.1%36.9%15.0%Pappas +11.2%
Average48.2%38.0%13.8%Pappas +10.2%
Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Chris
Pappas (D)		Scott
Brown (R)		OtherUndecided
University of New Hampshire [37] January 15–19, 20262,053 (LV)± 2.1%52%42%1% [g] 5%
NHJournal/Praecones Analytica [69] December 26–28, 2025603 (RV)± 4.0%46%28%–26%
Guidant Polling and Strategy (R) [58] [A] December 9–11, 2025600 (LV)± 4.0%49%38%–13%
Saint Anselm College [38] November 18–19, 20252,212 (RV)–44%36%–20%
co/efficient (R) [70] October 9–13, 20251,034 (LV)± 3.1%49%39%–13%
University of New Hampshire [40] September 17–23, 20251,235 (LV)± 2.8%52%37%2% [h] 8%
co/efficient (R) [59] September 10–12, 2025904 (LV)± 3.3%50%40%–10%
Saint Anselm College [71] August 26–27, 20251,776 (RV)± 2.3%48%37%–15%

Chris Pappas vs. John E. Sununu

Aggregate polls

Source of poll
aggregation		Dates
administered		Dates
updated		Chris
Pappas		John
Sununu		Other/Undecided
[b] 		Margin
RealClearPolitics [72] October 9, 2025 – January 19, 2026January 28, 202646.3%42.7%11.0%Pappas +3.6%
Race to the WH [68] September 9, 2025 – January 21, 2026February 6, 202645.9%41.5%12.6%Pappas +4.4%
Average46.1%42.1%11.8%Pappas +4.0%
Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Chris
Pappas (D)		John E.
Sununu (R)		OtherUndecided
yes. every kid. [73] January 28–29, 2026563 (LV)± 4.1%45%41%–14%
University of New Hampshire [37] January 15–19, 20262,053 (LV)± 2.1%50%45%1% [g] 5%
NHJournal/Praecones Analytica [69] December 26–28, 2025603 (RV)± 4.0%42%36%–22%
Guidant Polling and Strategy (R) [58] [A] December 9–11, 2025600 (LV)± 4.0%47%44%–9%
Saint Anselm College [38] November 18–19, 20252,212 (RV)–44%41%–16%
co/efficient (R) [70] October 9–13, 20251,034 (LV)± 3.1%45%42%–12%
University of New Hampshire [40] September 17–23, 20251,235 (LV)± 2.8%49%43%1% [g] 7%
co/efficient (R) [59] September 10–12, 2025904 (LV)± 3.3%46%43%–11%
1892 Polling (R) [74] [A] September 2–4, 2025500 (LV)± 4.4%45%43%–12%
Hypothetical polling

Chris Pappas vs. Dan Innis

Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Chris
Pappas (D)		Dan
Innis (R)		Undecided
co/efficient (R) [59] September 10–12, 2025904 (LV)± 3.3%49%37%14%
Saint Anselm College [71] August 26–27, 20251,776 (RV)± 2.3%48%30%22%

Chris Pappas vs. Chris Sununu

Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Chris
Pappas (D)		Chris
Sununu (R)		Undecided
Quantus Insights (R) [75] [B] March 17–19, 2025650 (RV)± 3.8%44%53%3%

Jeanne Shaheen vs. Chris Sununu

Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Jeanne
Shaheen (D)		Chris
Sununu (R)		Undecided
Praecones Analytica [76] [C] February 26 – March 1, 2025626 (RV)± 4.5%46%54%–

Jeanne Shaheen vs. Frank Edelblut

Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Jeanne
Shaheen (D)		Frank
Edelblut (R)		Undecided
Praecones Analytica [76] [C] February 26 – March 1, 2025626 (RV)± 4.5%59%41%–

Jeanne Shaheen vs. Scott Brown

Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Jeanne
Shaheen (D)		Scott
Brown (R)		Undecided
Praecones Analytica [76] [C] February 26 – March 1, 2025626 (RV)± 4.5%55%45%–

Generic Democrat vs. generic Republican

Poll sourceDate(s)
administered		Sample
size [c] 		Margin
of error		Generic
Democrat		Generic
Republican		Undecided
co/efficient (R) [70] October 9–13, 20251,034 (LV)± 3.1%47%44%9%

Notes

  1. ↑ Bob Smith, the incumbent senator at the time, ran for re-election to a third term in 2002, but lost in the Republican primary to John Sununu.
  2. 1 2 3 4 Calculated by taking the difference of 100% and all other candidates combined.
  3. 1 2 3 4 5 6 7 8 9 10 Key:
    A – all adults
    RV – registered voters
    LV – likely voters
    V – unclear
  4. ↑ "Write in someone else" with 1%
  5. ↑ "Someone else" with 4%
  6. ↑ "Someone else" with 5%
  7. 1 2 3 "Another candidate" with 1%
  8. ↑ "Another candidate" with 2%

Partisan clients

  1. 1 2 3 4 Poll sponsored by One Nation, a group aligned with the Senate Leadership Fund
  2. 1 2 3 Poll conducted for the NHJournal

References

  1. 1 2 Belman, Felice (March 12, 2025). "Senator Jeanne Shaheen, New Hampshire Democrat, Won't Run Again in 2026". The New York Times . Retrieved March 12, 2025.
  2. ↑ "New Hampshire keeps all-Democratic delegation with Pappas, Goodlander wins in US House races". AP News. November 5, 2024. Retrieved December 10, 2024.
  3. ↑ "NH Republicans claim big State House wins and strengthen majorities in House and Senate". New Hampshire Public Radio. November 6, 2024. Retrieved December 10, 2024.
  4. ↑ Castronuovo, Celine (November 4, 2020). "Shaheen wins reelection in New Hampshire". The Hill. Retrieved December 10, 2024.
  5. ↑ https://rollcall.com/2025/10/22/new-hampshire-john-sununu-race-rating/
  6. 1 2 3 Graham, Michael (August 17, 2025). "Progressive Manzur To Challenge Pappas in Dem Senate Primary". NH Journal. Retrieved August 18, 2025.
  7. ↑ Sexton, Adam (April 3, 2025). "News 9 Exclusive: Chris Pappas announces he will run for U.S. Senate". WMUR-TV . Retrieved April 3, 2025.
  8. ↑ Blechl, Robert (September 26, 2025). "Bethlehem State Rep. Announces U.S. Senate Run". The Caledonian-Record . Archived from the original on September 27, 2025. Retrieved September 27, 2025.
  9. 1 2 Sexton, Adam (April 17, 2025). "US Rep. Maggie Goodlander decides against run for US Senate in 2026". WMUR-TV . Retrieved April 17, 2025.
  10. 1 2 Solender, Andrew (March 12, 2025). "Scoop: Rep. Chris Pappas eyes Jeanne Shaheen's newly open N.H. Senate seat". Axios . Retrieved March 12, 2025. Former Rep. Annie Kuster (D-N.H.), who retired from Congress this year, told Axios she 'will take a serious look if Pappas does not run.'
  11. 1 2 Sexton, Adam (April 24, 2025). "Shaheen endorses Pappas to replace her in Senate". WMUR-TV . Retrieved April 24, 2025.
  12. ↑ Sexton, Adam (March 30, 2025). Andru Volinsky debuts new book on fight for education funding. WMUR-TV . Retrieved March 30, 2025. [Adam Sexton]: Are you interested in running for U.S. Senate at all in 2026? [Andru Volinsky]: My focus is the book.
  13. ↑ "Meet Our 2026 Candidates". Peace Action. Retrieved November 26, 2025.
  14. ↑ @ProgressiveVic (January 18, 2026). "ENDORSEMENT ALERT! Here is our first 18 endorsements for this year's 2026 midterms" (Tweet). Retrieved January 18, 2026– via Twitter.
  15. ↑ https://www.trackaipac.com/endorsements
  16. ↑ Sexton, Adam (February 16, 2026). "Less than two years away from 2028 New Hampshire presidential primary, race starting to take shape". WMUR . Retrieved February 17, 2026. Pete Buttigieg, the former secretary of transportation, is coming to campaign for Chris Pappas later this week.
  17. ↑ Lips, Evan (April 4, 2025). "Both Parties Optimistic About NH01 Fight in 2026". NH Journal. Retrieved April 4, 2025.
  18. ↑ "Hassan backs Pappas as Dems unite in N.H."
  19. ↑ "A frustrated and feisty Dem base will greet Klobuchar in NH, Friday" . Retrieved January 1, 2026.
  20. 1 2 3 Landrigan, Kevin (April 28, 2025). "Former Gov. John Lynch and wife Susan endorse Pappas for Senate". New Hampshire Union Leader . Retrieved April 29, 2025.
  21. 1 2 "LGBTQ+ Victory Fund Endorses Chris Pappas for U.S. Senate". LGBTQ+ Victory Fund. Retrieved April 3, 2025.
  22. ↑ "Largest Federal Employee Union Endorses Rep. Chris Pappas for Senate". www.afge.org. American Federation of Government Employees. May 6, 2025. Retrieved May 6, 2025.
  23. ↑ "AIPAC Political Portal". candidates.aipacpac.org. Retrieved April 28, 2025.
  24. ↑ "Candidates". Brady PAC. Retrieved January 29, 2026.
  25. ↑ "Senate Candidates". Council for a Livable World. Retrieved November 23, 2025.
  26. ↑ Rod, Marc (November 20, 2025). "DMFI backs Haley Stevens, Angie Craig as they face primaries from the anti-Israel left". Jewish Insider . Retrieved November 20, 2025.
  27. ↑ "End Citizens United Endorses Representative Chris Pappas for U.S. Senate". April 3, 2025. Retrieved April 7, 2025.
  28. ↑ "GIFFORDS PAC endorses Chris Pappas for US Senate". giffords.org. July 17, 2025. Retrieved September 8, 2025.
  29. ↑ "Human Rights Campaign PAC Endorses New Hampshire Rep. Chris Pappas…". HRC. September 17, 2025. Retrieved November 25, 2025.
  30. ↑ "Jewish Dems Endorsed Candidates". Jewish Democratic Council of America. Retrieved October 28, 2025.
  31. ↑ "Candidates". Joint Action Committee for Political Affairs.
  32. ↑ Booth, Colin (August 11, 2025). "Exclusive: Leading climate group endorses Rep. Chris Pappas for US Senate". Granite Post. Retrieved August 11, 2025.
  33. ↑ "Planned Parenthood Action Fund rolls out first Senate endorsements ahead of November midterms" . Retrieved January 22, 2026.
  34. ↑ Santaliz, Kate (December 9, 2025). "Abortion rights group backs Janet Mills and others in first 2026 Senate endorsements". Axios. Retrieved December 9, 2025.
  35. 1 2 "2026 Election United States Senate - New Hampshire". fec.gov. Federal Election Commission . Retrieved April 23, 2025.
  36. 1 2 "2026 Polls: New Hampshire Senate". 270toWin. Retrieved January 1, 2026.
  37. 1 2 3 4 McKinley, Sean P.; Smith, Andrew E.; Azem, Zachary S.; Keirns, Tracy (January 21, 2026). "Sununu, Pappas Frontrunners in 2026 NH Senate Race; Ayotte Favored for Re-election as Governor". UNH Scholars Repository. Retrieved January 22, 2026.
  38. 1 2 3 4 "New Poll by the Saint Anselm College Survey Shows Declining Optimism, Democracy Dominant as Issue, and Early Partisan Divides Ahead of 2026". Saint Anselm College . November 24, 2025. Retrieved November 24, 2025.
  39. 1 2 McKinley, Sean P.; Smith, Andrew E.; Azem, Zachary S.; Keirns, Tracy (November 24, 2025). "Pappas, Sununu Lead in Early NH Senate Primary Races". UNH Scholars Repository. Retrieved November 24, 2025.
  40. 1 2 3 4 McKinley, Sean P.; Smith, Andrew E.; Azem, Zachary S.; Keirns, Tracy (September 29, 2025). "Early Look at 2026 NH Races". UNH Scholars Repository. Retrieved September 29, 2025.
  41. ↑ Sexton, Adam (June 25, 2025). "News 9 Exclusive: Scott Brown jumping into 2026 race for U.S. Senate in New Hampshire". WMUR-TV . Retrieved June 25, 2025.
  42. ↑ Sexton, Adam (October 22, 2025). "News 9 Exclusive: John E. Sununu officially launches campaign for US Senate". WMUR-TV . Retrieved October 22, 2025.
  43. 1 2 Graham, Michael (September 25, 2025). "Innis Suspends US Senate Campaign, Backs John E. Sununu". NH Journal. Retrieved September 25, 2025.
  44. ↑ Nir, David; Singer, Jeff (March 13, 2025). "Morning Digest: Jeanne Shaheen, a New Hampshire institution, will retire from the Senate". The Downballot. Retrieved March 13, 2025. Gov. Kelly Ayotte, though, unequivocally said she wasn't interested in returning to the Senate this cycle.
  45. ↑ Porter, Steven (April 8, 2025). "Former N.H. governor Chris Sununu says he won't run for US Senate in 2026". The Boston Globe . Retrieved April 8, 2025.
  46. ↑ Graham, Michael (March 17, 2025). "NH Republicans Eying Possible Open Congressional Seats Amid Goodlander-Pappas Chatter". NH Journal. Retrieved March 18, 2025. 2024 nominee Lily Tang Williams told NHJournal she is 'open minded' to the possibilities of running for either the House or Senate.
  47. ↑ Lips, Evan (April 10, 2025). "Lily Tang Williams Enters 2nd CD Race as Goodlander Considers Senate Run". NH Journal. Retrieved April 10, 2025.
  48. ↑ Pompeo, Mike (September 23, 2025). "CAVPAC in Action". CAVPAC. Retrieved September 30, 2025.
  49. 1 2 Landrigan, Kevin (November 8, 2025). "State House Dome: Bob Smith, who faced both GOP Senate candidates, goes with Scott Brown". UnionLeader.com . Retrieved November 10, 2025.
  50. ↑ "Animal Wellness Action Endorses Former Senator Scott Brown in New Hampshire Republican Senate Primary". Animal Wellness Action. January 20, 2026. Retrieved February 11, 2026.
  51. ↑ Manchester, Julia (February 1, 2026). "Trump backs John Sununu in New Hampshire Senate race". The Hill. Retrieved February 1, 2026.
  52. 1 2 3 4 5 6 7 8 9 10 Vakil, Caroline (October 27, 2025). "John Sununu nabs endorsements from group of GOP senators in New Hampshire Senate race". The Hill . Retrieved October 27, 2025.
  53. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 "You are Invited to Attend a Campaign Kickoff Reception & Dinner". Politico . November 17, 2025. Retrieved November 17, 2025.
  54. 1 2 3 4 5 Graham, Michael (October 23, 2025). "Sununu Announces Run, NH Politics Reacts". NHJournal. Retrieved October 25, 2025.
  55. ↑ Nir, David; Singer, Jeff (October 23, 2025). "Morning Digest, sponsored by FiftyPlusOne: Republicans land their second-choice Sununu in New Hampshire". The Downballot. Retrieved October 25, 2025.
  56. 1 2 3 Steinhauser, Paul (October 25, 2025). "Former GOP senator running to flip key swing state seat says he wants to 'work with President Trump'". Fox News . Retrieved November 17, 2025.
  57. ↑ "2026 New Hampshire Senate - Republican Primary". RealClearPolitics. Retrieved November 13, 2025.
  58. 1 2 3 "New Hampshire Senate Survey Results". Guidant Polling and Strategy. December 29, 2025. Retrieved January 6, 2026.
  59. 1 2 3 4 "New Hampshire Senate 2026 Election" (PDF). co/efficient. September 12, 2025. Retrieved September 15, 2025.
  60. ↑ Levesque, Neil; Sisco, Tauna (September 5, 2025). "A Survey of Registered NH Voters" (PDF). Saint Anselm College . Retrieved September 9, 2025.
  61. ↑ "GIOVONIZZI, MATTHEW S. FEC FORM 2 STATEMENT OF CANDIDACY FILING FEC-1885748".
  62. ↑ Touchberry, Ramsey (January 12, 2026). "Meet Aaron Day, the 2016 spoiler who could sink GOP in New Hampshire". Washington Examiner. Retrieved January 12, 2026.
  63. ↑ "Senate Ratings". Inside Elections. Retrieved January 14, 2025.
  64. ↑ "2026 CPR Senate Race Ratings". Cook Political Report. Retrieved February 11, 2025.
  65. ↑ "2026 Senate ratings". Sabato's Crystal Ball. Retrieved February 13, 2025.
  66. ↑ "2026 Senate Forecast". Race to the WH. Retrieved February 14, 2026.
  67. ↑ "2026 New Hampshire Senate - Pappas vs. Brown". RealClearPolitics. Retrieved November 13, 2025.
  68. 1 2 "2026 Senate Polling Average". Race to the WH. Retrieved February 8, 2026.
  69. 1 2 Graham, Michael (January 4, 2026). "EXCLUSIVE: Trump Underwater, Ayotte Still Afloat in New NHJournal Poll". NHJournal. Retrieved January 5, 2026.
  70. 1 2 3 "New Hampshire Senate 2026 General Election". co/efficient. October 13, 2025. Retrieved October 15, 2025.
  71. 1 2 Sexton, Adam (September 3, 2025). "Poll shows Pappas leading potential Republican nominees in Senate racep". WMUR . Retrieved September 3, 2025.
  72. ↑ "2026 New Hampshire Senate - Pappas vs. Sununu". RealClearPolitics. Retrieved November 13, 2025.
  73. ↑ "New Hampsh⁠i⁠re vo⁠t⁠ers suppor⁠t⁠ expanded publ⁠i⁠c school access". yes. every kid. February 13, 2026. Retrieved February 14, 2026.
  74. ↑ "NH SEN: Sununu Would Flip the Script in New Hampshire Senate Race" (PDF). 1892 Polling. September 6, 2025. Retrieved September 9, 2025.
  75. ↑ "Sununu Leads Pappas in Hypothetical New Hampshire Senate Matchup". Quantus Insights. March 20, 2025. Retrieved March 20, 2025.
  76. 1 2 3 Graham, Michael (March 2, 2025). "EXCLUSIVE POLL: Age Issue Dogs Shaheen, Trails Sununu by 9 Points". NHJournal. Retrieved March 3, 2025.
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