1974Final results
1974 election for South Dakota Legislative District 12
South Dakota State Senate · South Dakota
Harold Anderson (R) won with 52.4% of the vote, defeating W. Thomas Osborne (D) by 4.7 points.
Harold AndersonRepublican · winner · incumbent
52.4%4,573
W. Thomas OsborneDemocrat
47.6%4,160
8,733 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 1974
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET