2020Final results
2020 election for South Carolina Senate District 17
South Carolina State Senate · South Carolina
Mike Fanning (D) won with 51.5% of the vote, defeating Erin Mosley (R) by 3.1 points.
Mike FanningDemocrat · winner · incumbent
51.5%26,724
Erin MosleyRepublican
48.4%25,114
51,885 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET