1990Final results
1990 election for Michigan Senate District 31
Michigan State Senate · Michigan
Dick Posthumus (R) won with 72.6% of the vote, defeating James Rinck (D) by 45.2 points.
Dick PosthumusRepublican · winner · incumbent
72.6%55,722
James RinckDemocrat
27.4%21,031
76,753 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET