1970Flipped from DemocraticFinal resultsIncumbent defeated
1970 election for South Dakota Legislative District 25
South Dakota State Senate · South Dakota
John P. Flynn (R) won with 50.7% of the vote, defeating R. C. Stenson (D) by 1.5 points, a seat Democrats won last time.
John P. FlynnRepublican · winner
50.7%3,421
R. C. StensonDemocrat · incumbent
49.3%3,321
6,742 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