2018Final results
2018 election for Wisconsin's 7th District
U.S. House · Wisconsin
Sean P. Duffy (R) won with 60.1% of the vote, defeating Margaret Engebretson (D) by 21.6 points.
Sean P. DuffyRepublican · winner
60.1%194,061
Margaret EngebretsonDemocrat
38.5%124,307
Ken DriessenIndependent
1.4%4,416
322,787 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Margaret EngebretsonSean P. Duffy
$131.3K
Raised by the campaign
$3.7M
$127.7K
Spent by the campaign
$2.8M
$6.9K
Cash on hand
$1.8M
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018