1930 United States Senate election in Colorado
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The 1930 United States Senate election in Colorado took place on November 4, 1930. Republican Senator Lawrence C. Phipps declined to run for re-election, resulting in an open race to replace him. Edward P. Costigan, one of the founding members of the Progressive Party in Colorado and a former member of the United States Tariff Commission, won the Democratic nomination and faced attorney George H. Shaw, the Republican nominee, in the general election. Aided by the nationwide Democratic landslide, Costigan handily defeated Shaw, becoming the first Democrat elected to the Senate from Colorado since 1914.
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November 4, 1930
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 County results Costigan: 40â50% 50â60% 60â70% Shaw: 40â50% 50â60% 60â70% | |||||||||||||||||
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Democratic primary
Candidates
- Edward P. Costigan, former Member of the United States Tariff Commission
- Morrison Shafroth, attorney and son of former Governor and U.S. Senator John F. Shafroth, 1924 Democratic nominee for the U.S. Senate
- James A. Marsh, former City Attorney of Denver[1]
Results
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Edward P. Costigan | 24,698 | 51.61 | |
| Democratic | Morrison Shafroth | 15,819 | 33.06 | |
| Democratic | James A. Marsh | 7,337 | 15.33 | |
| Total votes | 47,854 | 100.00 | ||
Republican primary
Candidates
Results
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | George H. Shaw | 63,112 | 56.27 | |
| Republican | William V. Hodges | 49,043 | 43.73 | |
| Total votes | 112,155 | 100.00 | ||
General election
Results
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Edward P. Costigan | 180,028 | 55.85% | +11.96% | |
| Republican | George H. Shaw | 137,487 | 42.65% | â7.54% | |
| Socialist | Morton Alexander | 1,745 | 0.54% | +0.05% | |
| FarmerâLabor | H. H. Marrs | 1,367 | 0.42% | â4.62% | |
| Communist | James Allander | 924 | 0.29% | â0.09% | |
| Democratic Liberal | Frank H. Rice | 451 | 0.14% | â | |
| Commonwealth Party | James Allander | 339 | 0.11% | â | |
| Majority | 42,541 | 13.20% | +6.90% | ||
| Turnout | 322,341 | ||||
| Democratic gain from Republican | |||||