1990Final results
1990 election for South Dakota Governor
Governor · South Dakota
George S. Mickelson (R) won with 58.9% of the vote, defeating Bob L. Samuelson (D) by 17.8 points.
George S. MickelsonRepublican · winner
58.9%151,198
Bob L. SamuelsonDemocrat
41.1%105,525
256,723 votes
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET
The seat over time
D − R margin in this seat's races around 1990
Races before and after
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET