1978Final results
1978 election for South Dakota Legislative District 3
South Dakota State Senate · South Dakota
Harold Halverson (R) won with 54.7% of the vote, defeating Arlo Leddy (D) by 9.3 points.
Harold HalversonRepublican · winner · incumbent
54.7%4,023
Arlo LeddyDemocrat
45.3%3,336
7,359 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