1986Final results
1986 election for Michigan Senate District 38
Michigan State Senate · Michigan
Joseph Mack (D) won with 68.9% of the vote, defeating Peter Koski (R) by 37.8 points.
Joseph MackDemocrat · winner · incumbent
68.9%40,018
Peter KoskiRepublican
31.1%18,071
58,093 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 1986
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET