Chris Pappas Wins New Hampshire Senate Race, Securing Democratic Hold

Democratic Rep. Chris Pappas has won New Hampshire’s US Senate race, preventing a Republican flip in the seat being vacated by retiring Sen. Jeanne Shaheen. Pappas, 46, defeated former Sen. John Sununu, 62, in a closely contested election. The outcome is significant as New Hampshire hasn’t elected a Republican to the Senate since 2010, despite Republican control of the governor’s mansion since 2017. Pappas will be the first openly gay man to serve in the US Senate.

Pappas, a four-term House member and centrist Democrat, campaigned focusing on opposing the Trump administration and highlighting its unpopular policies, including the war in Iran and proposed Medicaid cuts. He received endorsements from prominent Democrats and portrayed Sununu as a moderate in name only, likely to support President Trump’s agenda. Sununu, who previously served as a Senator from 2003 to 2009 before being defeated by Shaheen in 2008, attempted to distance himself from Trump, even claiming in an ad that he had never met the president, while still securing Trump’s endorsement. He pitched himself as an independent candidate, criticizing the administration’s approach to both Iran and Ukraine.

Both candidates faced primary challenges, Pappas from a progressive challenger, and Sununu from a candidate further to the right, but prevailed by over 30-point margins. The race became a late source of anxiety for Democrats, given the close polling and Sununu’s family name recognition in the state, as he is the son and brother of former New Hampshire governors. With Pappas’s victory, Democrats retain a key seat and potentially improve their chances of gaining a majority in the Senate. Stefany Shaheen, the retiring senator’s daughter, is now competing for Pappas’s former House seat.

Where they differ

• The Washington Examiner emphasized the outcome as a setback for Republicans, noting it was one of the few seats they hoped to flip.
• CBS News highlighted Pappas’s membership in the bipartisan Problem Solvers Caucus, while other sources did not.
• The Guardian focused on Pappas’s campaign strategy of framing Sununu as a ‘faux moderate’ and capitalizing on the Trump administration’s unpopularity, a framing less prominent in other reports.

Background

• John E. Sununu previously served as a U.S. Senator for New Hampshire [background knowledge].
• In the 2026 midterm elections, all 435 House seats and 35 Senate seats were at stake, with Democrats needing to flip three House seats and four Senate seats to gain control of both chambers [Fact Refinery, 2026-11-03].
• Prior to the 2026 election, New Hampshire had not elected a Republican to the Senate since 2010, though Republicans controlled the governor’s mansion since 2017 [Fact Refinery, 2026-11-04].
• John Sununu won the Republican Senate primary in New Hampshire, setting up the general election race against Jeanne Shaheen [Fact Refinery, 2026-09-09].

Our reading

Our reading is that Chris Pappas’s victory represents a significant hold for the Democrats in a state where Republicans have seen success at the gubernatorial level, but have struggled to win Senate seats. The emphasis on framing John Sununu as closely aligned with Trump, despite his attempts to distance himself, appears to have been a successful strategy, capitalizing on the former president’s unpopularity. The fact that both candidates faced primary challenges from more extreme wings of their respective parties suggests a degree of moderation was rewarded by voters.

What to watch

• The final vote count for Stefany Shaheen’s race for Pappas’s former House seat, to see if the Democratic momentum extends down-ballot [election results websites].
• Any post-election analysis of voter demographics in New Hampshire, to determine if specific groups were decisive in Pappas’s win [polling data analysis].
• Statements from Republican leadership regarding their strategy for regaining Senate seats in New Hampshire in future elections [party statements/news reports].

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