# 1978 United States Senate election in New Hampshire

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vte :
The 1978 United States Senate election in New Hampshire took place on November 7, 1978. Incumbent Democratic Senator Thomas J. McIntyre ran for re-election to a fourth term but was defeated by Republican Gordon J. Humphrey.

## Democratic primary
### Candidates

* Raymond J. Coughlan, former U.S. Navy captain
* Thomas J. McIntyre, incumbent Senator

### Results

1978 Democratic Senate primary :
| Party | Party | Candidate | Votes | % |
| | Democratic | Thomas J. McIntyre (incumbent) | 31,796 | 80.70% |
| | Democratic | Raymond J. Coughlan | 7,605 | 19.30% |
| Total votes | Total votes | Total votes | 39,401 | 100.00% |

## Republican primary
### Candidates

* Carmen Chimento, perennial candidate
* Gordon J. Humphrey, professional pilot and conservative activist
* Alf E. Jacobson, State Senator from New London
* James Masiello, businessman and former Mayor of Keene

### Results

1978 Republican Senate primary :
| Party | Party | Candidate | Votes | % |
| | Republican | Gordon J. Humphrey | 35,503 | 50.24% |
| | Republican | James A. Masiello | 18,371 | 26.00% |
| | Republican | Alf E. Jacobson | 13,619 | 19.27% |
| | Republican | Carmen C. Chimento | 2,885 | 4.08% |
| | Democratic | Thomas J. McIntyre (incumbent, write-in) | 243 | 0.34% |
| | Write-in | All others | 47 | 0.07% |
| | Democratic | Raymond J. Coughlan (write-in) | 1 | 0.00% |
| Total votes | Total votes | Total votes | 70,669 | 100.00% |

## General election
### Results

General election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Gordon J. Humphrey | 133,745 | 50.71% | 7.59 |
| | Democratic | Thomas J. McIntyre (incumbent) | 127,945 | 48.51% | 8.37 |
| | Libertarian | Craig Franklin | 2,070 | 0.79% | N/A |
| Total votes | Total votes | Total votes | 284,047 | 100.00% |
| | Republican gain from Democratic | Republican gain from Democratic | Swing | | |