2010Final results
2010 election for Michigan Senate District 12
Michigan State Senate · Michigan
Jim Marleau (R) won with 60.9% of the vote, defeating Casandra Ulbrich (D) by 21.8 points.
Jim MarleauRepublican · winner
60.9%56,894
Casandra UlbrichDemocrat
39.1%36,526
93,420 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 2010
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET