2018Flipped from RepublicanFinal resultsIncumbent defeated
2018 election for Illinois Representative District 45
Illinois House of Representatives · Illinois
Diane Pappas (D) won with 50.8% of the vote, defeating Christine Jennifer Winger (R) by 1.7 points, a seat Republicans won last time.
Diane PappasDemocrat · winner
50.8%20,383
Christine Jennifer WingerRepublican · incumbent
49.2%19,711
40,094 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