1980Final results
1980 election for South Dakota Legislative District 18
South Dakota State Senate · South Dakota
Robert N. Duxbury (D) won with 51.5% of the vote, defeating Robert C. Krog (R) by 3.0 points.
Robert N. DuxburyDemocrat · winner
51.5%4,536
Robert C. KrogRepublican
48.5%4,268
8,804 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 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET