Democratic Sen. Jeanne Shaheen of New Hampshire announced Wednesday that she would not seek re-election in 2026, giving Republicans another opportunity to grow their Senate majority.

Shaheen has served in the Senate since 2009, flipping the previously red seat blue. Shaheen had also previously served as governor and in the state Senate.

'New Hampshire has a proud tradition of electing common-sense Republicans—and will do so again in 2026!'

"Today, after careful consideration, I'm announcing that I have made the difficult decision not to seek re-election to the Senate in 2026," Shaheen said in a statement Wednesday. "There are urgent challenges ahead, both here at home and around the world. And while I'm not seeking re-election — believe me — I am not retiring."

Although both Senate seats have been held by Democrats for the last few elections, New Hampshire has elected Republican governors since 2016, and Republicans have held on to a majority in the state Senate. Given the strong Republican voting presence in the state, the GOP has the opportunity to flip another key Senate seat.

"Another one!" Republican Sen. Tim Scott of South Carolina said in a statement Wednesday. "Shaheen's retirement is welcome news for Granite Staters eager for new leadership. New Hampshire has a proud tradition of electing common-sense Republicans—and will do so again in 2026!"

Republicans flipped four Democrat-held Senate seats in 2024, electing Republican Sens. Tim Sheehy of Montana, Dave McCormick of Pennsylvania, Bernie Moreno of Ohio, and Jim Justice of West Virginia. This leaves Republicans with a comfortable 53-seat majority to work with.

There has also been some speculation about a potential senatorial run by Republican former Gov. Chris Sununu. Although Sununu has been a past critic of President Donald Trump, he has since warmed up to the party leader and even endorsed him in 2024.

“I have not ruled it out completely, but folks in Washington have asked me to think about it and to consider it, and that is just kind of where I am,” Sununu told the New Hampshire Journal on Tuesday.

“I like getting stuff done,” Sununu said. “I don’t think they could handle me down there. I’d be like a lion in a cage.”

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