# 1966 United States Senate election in Maine

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vte :
The 1966 United States Senate election in Maine was held on November 8, 1966. Incumbent Republican U.S. Senator Margaret Chase Smith was re-elected to a fourth term over Democratic State Senator Elmer H. Violette.

## Republican primary
### Candidates

* Margaret Chase Smith, U.S. Senator since 1949

### Results

Senator Smith was unopposed for renomination
1966 Maine Republican U.S. Senate primary :
| Party | Party | Candidate | Votes | % |
| | Republican | Margaret Chase Smith (inc.) | 85,437 | 100.00% |
| Total votes | Total votes | Total votes | 85,437 | 100.00% |

## Democratic primary
### Candidates

* Jack L. Smith
* Plato Truman, perennial candidate
* Elmer H. Violette, State Senator from Van Buren

### Results

1966 Democratic U.S. Senate primary :
| Party | Party | Candidate | Votes | % |
| | Democratic | Elmer H. Violette | 23,259 | 45.17% |
| | Democratic | Plato Truman | 19,844 | 38.54% |
| | Democratic | Jack L. Smith | 8,386 | 16.29% |
| Total votes | Total votes | Total votes | 51,489 | 100.00% |

## General election
### Results

1966 U.S. Senate election in Maine :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Margaret Chase Smith (incumbent) | 188,291 | 58.93% | 2.72 |
| | Democratic | Elmer H. Violette | 131,136 | 41.04% | 2.69 |
| | Republican | Neil S. Bishop (write-in) | 108 | 0.03% | N/A |
| Total votes | Total votes | Total votes | 319,535 | 100.00% | |