| Election Name: | 2002 United States Senate election in New Hampshire |
| Country: | New Hampshire |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1996 United States Senate election in New Hampshire |
| Previous Year: | 1996 |
| Next Election: | 2008 United States Senate election in New Hampshire |
| Next Year: | 2008 |
| Election Date: | November 5, 2002 |
| Image1: | John E. Sununu.jpg |
| Nominee1: | John E. Sununu |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 227,229 |
| Percentage1: | 51.12% |
| Nominee2: | Jeanne Shaheen |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 207,478 |
| Percentage2: | 46.67% |
| U.S. Senator | |
| Before Election: | Bob Smith |
| Before Party: | Republican Party (United States) |
| After Election: | John E. Sununu |
| After Party: | Republican Party (United States) |
The 2002 United States Senate election in New Hampshire was held on November 5, 2002. Incumbent Republican U.S. Senator Bob Smith was defeated in the Republican primary by U.S. Representative John E. Sununu.[1] Sununu won the open seat, defeating Democratic Governor Jeanne Shaheen., this was the last time Republicans or a male candidate won the Class 2 Senate seat in New Hampshire; Shaheen defeated Sununu in their 2008 rematch for this seat and was re-elected in 2014 & 2020. This was Shaheen’s only unsuccessful run for elected office.
Senator Bob Smith, the incumbent Republican Senator, briefly left the party in 1999 to run for president as an independent, claiming that the Republican platform was "not worth the paper it's written on".[2] He rejoined the GOP a few months later, saying he made a mistake.[3] Nonetheless, the party never fully forgave him, and some of his fellow Republican Senators went so far as to endorse his primary opponent, Rep. John Sununu,[4] who would go on to win by more than eight percentage points.
See also: 2002 New Hampshire Senate election phone jamming scandal.
During the campaign, there was a major scandal that involved the use of a telemarketing firm hired by that state's Republican Party (NHGOP) for election tampering. The GOP Marketplace, based in Northern Virginia, jammed another phone bank being used by the state Democratic Party and the firefighters' union for efforts to turn out voters on behalf of then-governor Jeanne Shaheen on Election Day. The tampering involved using a call center to jam the phone lines of a Get Out the Vote (GOTV) operation. In the end, 900 calls were made for 45 minutes of disruption to the Democratic-leaning call centers. In addition to criminal prosecutions, disclosures in the case have come from a civil suit filed by the state's Democratic Party against the state's Republican Party (now settled). Four men have been convicted of, or pleaded guilty to, federal crimes and sentenced to prison for their involvement . One conviction has been reversed by an appeals court, a decision prosecutors are appealing. James Tobin, freed on appeal, was later indicted on charges of lying to the FBI during the original investigation.