2020Final results
2020 election for Illinois's 15th District
U.S. House · Illinois
Mary Miller (R) won with 73.4% of the vote, defeating Erika C. Weaver (D) by 46.9 points.
Mary MillerRepublican · winner
73.4%244,947
Erika C. WeaverDemocrat
26.6%88,559
333,506 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Erika C. WeaverMary Miller
$58.7K
Raised by the campaign
$700.3K
$32.1K
Spent by the campaign
$581.6K
-$210
Cash on hand
$118.7K
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020