2018Final results
2018 election for South Dakota Legislative District 13
South Dakota House of Representatives · South Dakota
2 seats: Sue Peterson (R), Kelly A. Sullivan (D) won.
2 seatsSue PetersonRepublican · winner · incumbent
37.0%6,116
Kelly A. SullivanDemocrat · winner
31.8%5,257
Rex RolfingRepublican
31.3%5,176
16,549 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