1990Final results
1990 election for Michigan's 12th District
U.S. House · Michigan
David Bonior (D) won with 64.7% of the vote, defeating Jim Dingeman (R) by 31.0 points.
David BoniorDemocrat · winner
64.7%98,232
Jim DingemanRepublican
33.7%51,119
Robert W. RoddisLibertarian
1.6%2,472
151,825 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 1990
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 BoniorJim Dingeman
$1.2M
Raised by the campaign
$296.1K
$1.2M
Spent by the campaign
$295.2K
$89.8K
Cash on hand
$867
Campaign money: FEC, through Dec 31, 1990.
Source: FEC campaign filingsUpdated Dec 31, 1990