This is the 1978 race. The latest: 2026 →

1978Final results

1978 election for South Dakota Legislative District 13

South Dakota State Senate · South Dakota

Eugene R. Mahan (D) won with 67.1% of the vote, defeating L. Bleeker (R) by 34.2 points.

Eugene R. MahanDemocrat · winner · incumbent
67.1%4,771
L. BleekerRepublican
32.9%2,340
7,111 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

EvenD+34.41980D+44.71982R+30.81984R+2.81986R+4.01988R+6.71990

Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET