# New Hampshire Senate election developments

> Live situation record from CLSTR: https://clstr.news/situations/new-hampshire-senate-election-developments
> Updated: 2026-09-09T00:47:03.000Z. Sources: 6. Developments: 3.

John Sununu has won the Republican primary for the U.S. Senate in New Hampshire. Having secured the nomination with the endorsement of Donald Trump, the former senator, who served from 2003 to 2009, is now set to face Democratic Representative Chris Pappas in the general election.

## Timeline

### 2026-09-09: Donald Trump endorses John Sununu in New Hampshire Senate primary win

John Sununu won the New Hampshire GOP Senate primary with Donald Trump's endorsement. Meanwhile, Trump announced the Republican National Convention in Dallas is sold out.

2 sources. https://clstr.news/cluster/donald-trump-endorses-john-sununu-in-new-hampshire-senate-primary-win

### 2026-09-02: John E. Sununu leads Chris Pappas in New Hampshire Senate poll

A University of New Hampshire poll shows former Senator John E. Sununu leading Chris Pappas in a hypothetical Senate race, as Sununu prepares for a Republican primary against Scott Brown.

2 sources. https://clstr.news/cluster/john-e-sununu-leads-chris-pappas-in-new-hampshire-senate-poll

### 2026-08-31: Donald Trump endorses John Sununu for New Hampshire Senate primary

Donald Trump is endorsing former Senator John Sununu in the New Hampshire GOP Senate primary, aiming to secure a victory over Scott Brown as part of his 2026 midterm strategy.

2 sources. https://clstr.news/cluster/donald-trump-endorses-john-sununu-for-new-hampshire-senate-primary

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Cite as: New Hampshire Senate election developments. CLSTR, https://clstr.news/situations/new-hampshire-senate-election-developments