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County results Cotton: 50-60% 60-70% 70-80% King: 50–60% | |||||||||||||||||
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The 1968 United States Senate election in New Hampshire took place on November 5, 1968. Incumbent Republican Senator Norris Cotton won re-election to a third full term.
Primary elections were held on September 10, 1968.
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | John W. King | 30,593 | 98.18 | |
| Democratic | Write-ins | 566 | 1.82 | |
| Total votes | 31,159 | 100.00 | ||
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Norris Cotton (incumbent) | 78,058 | 92.39 | |
| Republican | John C. Mongan | 6,279 | 7.43 | |
| Republican | Write-ins | 147 | 0.17 | |
| Total votes | 84,484 | 100.00 | ||
| Party | Candidate | Votes | % | ||
|---|---|---|---|---|---|
| Republican | Norris Cotton (Incumbent) | 170,163 | 59.29 | ||
| Democratic | John W. King | 116,816 | 40.70 | ||
| Write-in | 10 | 0.00 | |||
| Majority | 53,347 | 18.59 | |||
| Turnout | 286,989 | ||||
| Republican hold | |||||
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