1986Final results
1986 election for Wisconsin's 1st District
U.S. House · Wisconsin
Leslie Aspin (D) won with 74.3% of the vote, defeating Iris Peterson (R) by 50.2 points.
Leslie AspinDemocrat · winner
74.3%106,288
Iris PetersonRepublican
24.1%34,495
John GrafOther party
1.6%2,354
143,139 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.
Leslie AspinIris Peterson
$503.5K
Raised by the campaign
$9.8K
$497.6K
Spent by the campaign
$9.6K
$80.1K
Cash on hand
$196
Campaign money: FEC, through Dec 31, 1986.
Source: FEC campaign filingsUpdated Dec 31, 1986