1978Final results
1978 election for South Carolina House District 20
South Carolina House of Representatives · South Carolina
Thomas M. Marchant (R) won with 57.0% of the vote, defeating Katie Roark (D) by 14.2 points.
Thomas M. MarchantRepublican · winner · incumbent
57.0%2,741
Katie RoarkDemocrat
42.8%2,057
4,810 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET