1978Final results
1978 election for South Dakota's 2nd District
U.S. House · South Dakota
James Abdnor (R) won with 56.0% of the vote, defeating Robert Samuelson (D) by 12.1 points.
James AbdnorRepublican · winner
56.0%70,780
Robert SamuelsonDemocrat
44.0%55,516
126,296 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1978
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET