1970Final results
1970 election for Illinois Legislative District 43
Illinois State Senate · Illinois
Donald D. Carpenter (R) won with 50.3% of the vote, defeating William R. Armstrong (D) by 0.5 points.
Donald D. CarpenterRepublican · winner · incumbent
50.3%29,522
William R. ArmstrongDemocrat
49.7%29,200
58,722 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