1972Final results
1972 election for South Dakota Legislative District 21
South Dakota State Senate · South Dakota
William L. Grams (R) won with 50.1% of the vote, defeating Earl E. McPherson (D) by 0.3 points.
William L. GramsRepublican · winner · incumbent
50.1%2,927
Earl E. McPhersonDemocrat
49.9%2,910
5,837 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 1972
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET