2018Final results
2018 election for South Dakota Legislative District 34
South Dakota State Senate · South Dakota
Jeff Partridge (R) won with 62.7% of the vote, defeating Zach Vanwyk (D) by 25.4 points.
Jeff PartridgeRepublican · winner · incumbent
62.7%6,332
Zach VanwykDemocrat
37.3%3,769
10,101 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