2018Final results
2018 election for Illinois Legislative District 48
Illinois State Senate · Illinois
Andy Manar (D) won with 56.8% of the vote, defeating Seth McMillan (R) by 13.6 points.
Andy ManarDemocrat · winner · incumbent
56.8%42,068
Seth McMillanRepublican
43.2%32,021
Michael GraggOther party
0.0%2
74,106 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET