1986Final results
1986 election for Illinois's 12th District
U.S. House · Illinois
Philip Crane (R) won with 77.7% of the vote, defeating John A. Leonardi (D) by 55.4 points.
Philip CraneRepublican · winner
77.7%89,044
John A. LeonardiDemocrat
22.3%25,536
114,580 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1986
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
John A. LeonardiPhilip Crane
$8K
Raised by the campaign
$339.1K
$7.9K
Spent by the campaign
$365.9K
$164
Cash on hand
$129.4K
Campaign money: FEC, through Dec 31, 1986.
Source: FEC campaign filingsUpdated Dec 31, 1986