1970Final results
1970 election for South Dakota Legislative District 27
South Dakota House of Representatives · South Dakota
Edwin J. Hadd (R) won with 50.1% of the vote, defeating Francis Marion Armstrong (D) by 0.3 points.
Edwin J. HaddRepublican · winner
50.1%1,788
Francis Marion ArmstrongDemocrat
49.9%1,778
3,566 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 1970
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET