1970Final resultsIncumbent defeated
1970 election for Illinois Legislative District 28
Illinois State Senate · Illinois
Thomas C. Hynes (D) won with 58.3% of the vote, defeating Arthur R. Swanson (R) by 16.6 points.
Thomas C. HynesDemocrat · winner
58.3%36,100
Arthur R. SwansonRepublican · incumbent
41.7%25,823
61,923 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