1972Final results
1972 election for South Dakota Legislative District 18
South Dakota State Senate · South Dakota
Robert Miller (R) won with 50.7% of the vote, defeating Harvey Christensen (D) by 1.4 points.
Robert MillerRepublican · winner · incumbent
50.7%4,954
Harvey ChristensenDemocrat
49.3%4,822
9,776 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