1978Final results
1978 election for Illinois Legislative District 55
Illinois State Senate · Illinois
James H. Donnewald (D) won with 63.4% of the vote, defeating Jack Brown (R) by 26.8 points.
James H. DonnewaldDemocrat · winner · incumbent
63.4%36,246
Jack BrownRepublican
36.6%20,935
57,181 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