2016Final results
2016 election for Michigan's 4th District
U.S. House · Michigan
John Moolenaar (R) won with 61.6% of the vote, defeating Debra Wirth (D) by 29.5 points.
John MoolenaarRepublican · winner
61.6%194,572
Debra WirthDemocrat
32.1%101,277
Leonard SchwartzLibertarian
2.7%8,516
George M. ZimmerConstitution
1.8%5,595
Jordan SalviGreen
1.3%3,953
Keith ButkovichNatural Law
0.6%1,838
315,751 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Debra WirthJohn Moolenaar
$14.9K
Raised by the campaign
$1.1M
$12.7K
Spent by the campaign
$1M
$2.2K
Cash on hand
$37.6K
Campaign money: FEC, through Dec 31, 2016.
Source: FEC campaign filingsUpdated Dec 31, 2016
The candidates
John Moolenaar (R)Debra Wirth (D)
Also on the ballot: Leonard Schwartz (Libertarian), 2.7%; George M. Zimmer (Constitution), 1.8%; Jordan Salvi (Green), 1.3%; Keith Butkovich (Natural Law), 0.6%