# 1918 United States Senate election in Colorado

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vte :
The 1918 United States Senate election in Colorado took place on November 5, 1918. It was the second direct U.S. Senate election in Colorado following the ratification of the Seventeenth Amendment, and the first for the Class 2 Senate seat. Democratic senator John F. Shafroth ran for re-election to a second term, and was opposed by Denver businessman Lawrence C. Phipps, the Republican nominee, in the general election. As Republicans made gains nationwide, they performed well in Colorado, too, and Phipps unseated Shafroth by a thin margin.

## Democratic primary
### Candidates
#### Declared

* John F. Shafroth, incumbent U.S. senator

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | John F. Shafroth (inc.) | 42,664 | 100.00 |
| Total votes | Total votes | Total votes | 42,664 | 100.00 |

## Republican primary
### Candidates

* Lawrence C. Phipps, Denver businessman, President of the Colorado Taxpayers Protective League
* Charles W. Waterman, Denver attorney

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Lawrence C. Phipps | 31,537 | 67.43 |
| | Republican | Charles W. Waterman | 15,235 | 32.57 |
| Total votes | Total votes | Total votes | 46,772 | 100.00 |

## General election
### Results

1918 United States Senate election in Colorado :
| Party | Party | Candidate | Votes | % |
| | Republican | Lawrence C. Phipps | 107,726 | 49.49% |
| | Democratic | John F. Shafroth (inc.) | 104,347 | 47.94% |
| | Prohibition | P. A. Richardson | 5,606 | 2.58% |
| Total votes | Total votes | Total votes | 217,679 | 100.00% |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |