Voters in New Hampshire will elect one member to the U.S. Senate in the general election on Nov. 3, 2026.

Incumbent Sen. Jeanne Shaheen (D-N.H.), who first assumed office in 2009, announced that she would not seek re-election in 2026. According to Inside Elections’ Jacob Rubashkin, “While New Hampshire was already on the Senate battleground, Shaheen’s decision could set off a prolonged and difficult primary between several prominent Democrats and entice stronger GOP recruits into the race than if she had run for re-election.”

As of April 14, 2025, two candidates filed to run for the seat. Those candidates include Rep. Chris Pappas (D-N.H.), who has represented New Hampshire’s 1st Congressional District since 2019, and Tejasinha Sivalingam (R), who ran unsuccessfully for the Republican nomination in the 2022 U.S. Senate election. Click here to view all of the candidates for the seat.

Rep. Maggie Goodlander (D-N.H.), who voters elected to represent New Hampshire’s 2nd Congressional District in 2024, has gained media attention as a potential candidate. On the Republican side, former Sen. Scott Brown (R-Mass.), who represented Massachusetts in the Senate from 2010 to 2013 and ran unsuccessfully against Shaheen in 2014, has also gained media attention as a potential candidate.

Former New Hampshire Gov. Chris Sununu (R) and former Rep. Annie Kuster (D-N.H.) also gained media attention as possible candidates but have both said they will not run for the seat.

All four members of New Hampshire’s congressional delegation—Pappas, Goodlander, Shaheen, and Sen. Maggie Hassan (D-N.H.)—are all Democrats. The state’s most recent Republican senator was Kelly Ayotte (R), who served from 2011 to 2017.

In the six presidential elections from 2004 to 2024, Democratic presidential candidates won the state’s popular vote. In the 2020 presidential election, Joe Biden (D) won 53% of the vote to Donald Trump‘s (R) 45%. In 2024, Kamala Harris (D) won 51% of the state’s popular vote to Trump’s (R) 48%.

Since 2021, New Hampshire has been a Republican trifecta, meaning Republicans control the governorship and both legislative chambers. New Hampshire’s last Democratic governor was Hassan, who resigned on Jan. 2, 2017.

As of April 14, 2025, The Cook Political Report with Amy Walter and Larry Sabato’s Crystal Ball each rated the general election Lean Democratic, while Inside Elections with Nathan Gonzales rated it Battleground Democratic. Click here for more information on race forecasts.