The 1970 New Hampshire gubernatorial election was held on November 3, 1970.
Incumbent Republican Governor Walter R. Peterson Jr. defeated Democratic nominee Roger J. Crowley with 45.99% of the vote.
Primary elections
Primary elections were held on September 8, 1970.
Democratic primary
Candidates
- Roger J. Crowley, former State Commissioner of Resources and Economic Development
- Dennis J. Sullivan, Mayor of Nashua
- Charles F. Whittemore, former State Commissioner of Health and Welfare
Republican primary
Candidates
- Elmer E. Bussey, perennial candidate
- Walter R. Peterson Jr., incumbent Governor
- Meldrim Thomson Jr., publisher and unsuccessful candidate for Republican nomination for Governor in 1968
General election
Candidates
- Robert J. Crowley, Democratic
- Walter R. Peterson Jr., Republican
- Meldrim Thomson Jr., American. Having been defeated in the Republican primary, Thomson stood for George Wallace's American Party.