1978 general · November 7, 1978
1978 Illinois State Senate election results, district by district
Every Illinois State Senate district in the 1978 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Democrats controlled the chamber · 59 seats
After the electionD 32 · R 27
Races40
Changed party4
Unopposed12%5 races
Incumbents defeated1
Every district
D 20 · R 20
Illinois State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: Harvard Dataverse / Carl Klarner