2018Flipped from RepublicanFinal results
2018 election for Illinois Representative District 51
Illinois House of Representatives · Illinois
Mary Edly-Allen (D) won with 50.4% of the vote, defeating Helene Miller Walsh (R) by 0.7 points, a seat Republicans won last time.
Mary Edly-AllenDemocrat · winner
50.4%25,950
Helene Miller WalshRepublican
49.6%25,576
51,526 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