1978Flipped from DemocraticFinal results
1978 election for South Dakota Legislative District 12
South Dakota State Senate · South Dakota
Harold Anderson (R) won with 50.8% of the vote, defeating John H. McMurry Jr. (D) by 1.6 points, a seat Democrats won last time.
Harold AndersonRepublican · winner
50.8%4,530
John H. McMurry Jr.Democrat
49.2%4,389
8,919 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 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET