| Election Name: | 1924 Democratic Senate primary runoff in South Carolina |
| Country: | South Carolina |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1918 United States Senate election in South Carolina |
| Previous Year: | 1918 |
| Next Election: | 1930 United States Senate election in South Carolina |
| Next Year: | 1930 |
| Election Date: | September 9, 1924 |
| Image1: | Coleman L Blease (cropped).jpg |
| Image1 Size: | x150px |
| Nominee1: | Cole Blease |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 100,738 |
| Percentage1: | 50.57% |
| Image2 Size: | x150px |
| Nominee2: | James F. Byrnes |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 98,467 |
| Percentage2: | 49.43% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Nathaniel B. Dial |
| Before Party: | Democratic Party (United States) |
| After Election: | Coleman Livingston Blease |
| After Party: | Democratic Party (United States) |
The 1924 South Carolina United States Senate election was held on November 4, 1924, to select the U.S. Senator for a six-year term from the state of South Carolina. Coleman Livingston Blease won the Democratic primary and was unopposed in the general election to win the six-year term to the Senate.
| Democratic Primary | |||
|---|---|---|---|
| Candidate | Votes | % | |
| Coleman Livingston Blease | 83,738 | 41.8 | |
| 67,727 | 33.8 | ||
| Nathaniel B. Dial (incumbent) | 44,425 | 22.2 | |
| John J. McMahan | 4,530 | 2.2 | |
| Democratic Primary Runoff | |||
|---|---|---|---|
| Candidate | Votes | % | ±% |
| Coleman Livingston Blease | 100,738 | 50.6 | +8.8 |
| James F. Byrnes | 98,467 | 49.4 | +15.6 |
|-| | colspan=5 |Democratic hold|-