New Hampshire Republican John E. Sununu has announced his campaign for the U.S. Senate seat he lost nearly 20 years ago. Sununu is seeking the Republican nomination for the seat being vacated by U.S. Sen. Jeanne Shaheen, a Democrat who ousted him in 2008. He’ll face another former senator, Scott Brown, in the GOP primary. National Republicans consider Sununu a strong candidate, but his past opposition to Donald Trump could be a challenge. Sununu backed Nikki Haley in the 2024 Republican presidential primary. Despite being out of office for years, Sununu’s name recognition remains high due to his family’s political prominence.