2018Final results
2018 election for South Dakota Legislative District 19
South Dakota State Senate · South Dakota
Stace Nelson (R) won with 74.0% of the vote, defeating Ardon Wek (D) by 48.1 points.
Stace NelsonRepublican · winner · incumbent
74.0%7,531
Ardon WekDemocrat
26.0%2,642
10,173 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET