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.
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 County results Phipps: 40–50% 50–60% Shafroth: 40–50% 50–60% 60–70% 70–80% | |||||||||||||||||
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Democratic primary
editCandidates
editDeclared
edit- John F. Shafroth, incumbent U.S. senator
Results
edit| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | John F. Shafroth (inc.) | 42,664 | 100.00 | |
| Total votes | 42,664 | 100.00 | ||
Republican primary
editCandidates
edit- Lawrence C. Phipps, Denver businessman, President of the Colorado Taxpayers Protective League
- Charles W. Waterman, Denver attorney
Results
edit| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Lawrence C. Phipps | 31,537 | 67.43 | |
| Republican | Charles W. Waterman | 15,235 | 32.57 | |
| Total votes | 46,772 | 100.00 | ||
General election
editResults
edit| 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 | 217,679 | 100.00% | ||
| Republican gain from Democratic | ||||
References
edit- ^ a b c "Result of Primaries". Colorado Statesman. Denver, Colorado. September 28, 1918. p. 7. Retrieved July 5, 2022.