# 1946 United States Senate election in Arizona

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The 1946 United States Senate elections in Arizona took place on November 5, 1946. Incumbent Democratic U.S. Senator Ernest McFarland ran for reelection to a second term, easily defeating his Republican challenger Ward S. Powers in the general election.

## Democratic primary
### Candidates

* Ernest McFarland, incumbent U.S. Senator
* Harry J. Valentine, Veterans' Service Officer

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Ernest McFarland (incumbent) | 61,287 | 79.5% |
| | Democratic | Harry J. Valentine | 15,818 | 20.5% |
| Total votes | Total votes | Total votes | 77,105 | 100.0 |

## Republican primary
### Candidates

* Ward S. Powers

## General election

United States Senate election in Arizona, 1946 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Ernest McFarland (incumbent) | 80,415 | 69.18% | −2.43% |
| | Republican | Ward S. Powers | 35,022 | 30.13% | +2.15% |
| | Communist | Morris Graham | 802 | 0.69% | |
| Majority | Majority | Majority | 45,393 | 39.05% | −4.58% |
| Turnout | Turnout | Turnout | 116,239 | | |
| | Democratic hold | Democratic hold | Swing | | |