1986Final results
1986 election for Illinois's 10th District
U.S. House · Illinois
John Porter (R) won with 75.1% of the vote, defeating Robert A. Cleland (D) by 50.2 points.
John PorterRepublican · winner
75.1%87,530
Robert A. ClelandDemocrat
24.9%28,990
116,520 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.
Robert A. ClelandJohn Porter
$104.3K
Raised by the campaign
$188.3K
$103.8K
Spent by the campaign
$176.2K
$444
Cash on hand
$96.8K
Campaign money: FEC, through Dec 31, 1986.
Source: FEC campaign filingsUpdated Dec 31, 1986