1984Final results
1984 election for Michigan's 12th District
U.S. House · Michigan
David Bonior (D) won with 58.3% of the vote, defeating Eugene J. Tyza (R) by 17.4 points.
David BoniorDemocrat · winner
58.3%113,772
Eugene J. TyzaRepublican
40.9%79,824
Keith P. EdwardsLibertarian
0.7%1,388
194,984 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 1984
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.
David BoniorEugene J. Tyza
$150.1K
Raised by the campaign
$948
$135.6K
Spent by the campaign
$962
$16.7K
Cash on hand
$0
Campaign money: FEC, through Dec 31, 1984; FEC, through Dec 1, 1984.
Source: FEC campaign filingsUpdated Dec 31, 1984