Former U.S. Senator John E. Sununu officially entered the 2026 race in New Hampshire, campaigning to succeed retiring Democratic Senator Jeanne Shaheen. In his launch video, Sununu told voters: \u201cCongress just seems loud, dysfunctional, even angry. I want to return to the Senate to help calm the waters.\u201d<\/p>\n\n\n\n
Sununu served three terms in the House before defeating then-Governor Shaheen in 2002 to win the New Hampshire Senate seat; he lost the rematch in 2008. His return comes nearly two decades after leaving public office for the private sector.<\/p>\n\n\n\n
For Republicans, this is a golden opportunity. New Hampshire is the region\u2019s only true swing state, and with Shaheen stepping aside, the seat opens up in a cycle where the GOP seeks not just to defend but expand its Senate majority. National Republicans believe Sununu brings strong name recognition and credibility in the Granite State.<\/p>\n\n\n\n
Still, the path is not automatic. Sununu must first secure the GOP nomination. His strongest competition comes from former Senator and Ambassador Scott Brown. Brown has leaned into the Trump-era base, emphasizing his alignment with President Trump\u2019s agenda and fundraising heavily. He\u2019s already called out Sununu\u2019s past independent streak, pointing to his backing of John Kasich in 2016 and Nikki Haley in 2024, as well as his published op-ed branding Trump a \u201closer.\u201d<\/p>\n\n\n\n
President Trump has remained officially neutral so far. While that leaves Sununu without an immediate endorsement booster, it also leaves room for maneuver. Reports suggest national Republican strategists view Sununu as the strongest candidate to flip the seat \u2014 a flip that would not only return it to the GOP column, but help lock in and expand the Senate majority Republicans are aiming for.<\/p>\n\n\n\n
Sununu emphasized the campaign will focus on Granite State issues such as healthcare affordability, energy costs, housing and border security, rather than Washington partisan squabbling. He said: \u201cMaybe you\u2019re surprised that I\u2019m running for the Senate again. I\u2019m a bit surprised myself. Why would anyone subject themselves to everything going on right now? Well, somebody has to step up and lower the temperature. Somebody has to get things done.\u201d<\/p>\n\n\n\n
In short: the Republican field now features a heavy-hitter with deep state roots, strong ties to New Hampshire, and a credible path to winning in 2026. The GOP has the chance to turn this open seat into a win \u2014 but Sununu will have to navigate primary politics, reconcile his past positions with today\u2019s Republican base, and secure key endorsements to prevail.<\/p>\n\n\n\n
Understanding Sununu\u2019s past interaction with Trump helps clarify the dynamics at play in this race.<\/p>\n\n\n\n
Background of Sununu\u2019s past opposition<\/strong><\/p>\n\n\n\n Why this history matters<\/strong><\/p>\n\n\n\n Where Trump stands (so far)<\/strong><\/p>\n\n\n\n What Sununu must do<\/strong><\/p>\n\n\n\n John E. Sununu\u2019s entry into the 2026 Senate race is a major development for Republicans. He brings name recognition, prior Senate experience, and a base in a state that is both competitive and critical to national Senate math. The complications with his past stance toward Trump are real \u2014 but not necessarily insurmountable<\/p>\n\n\n\n\n
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\n\n\n\nWhy a Sununu Win Matters for Republicans<\/h3>\n\n\n\n
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\n\n\n\nBottom Line<\/h3>\n\n\n\n