2020Final results
2020 election for Illinois's 18th District
U.S. House · Illinois
Darin LaHood (R) won with 70.4% of the vote, defeating George Petrilli (D) by 40.8 points.
Darin LaHoodRepublican · winner
70.4%261,840
George PetrilliDemocrat
29.6%110,039
371,879 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.
No DemocratDarin LaHood
—
Raised by the campaign
$3.3M
—
Spent by the campaign
$1.8M
—
Cash on hand
$3.1M
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020