2022Final results
2022 election for Wisconsin Senate District 15
Wisconsin State Senate · Wisconsin
Mark Spreitzer (D) won with 61.4% of the vote, defeating Mark Trofimchuck (R) by 22.8 points.
Mark SpreitzerDemocrat · winner
61.4%46,192
Mark TrofimchuckRepublican
38.5%29,006
75,260 votes
Source: MIT Election Data and Science LabUpdated Oct 2, 2026, 5:14 AM ET
The seat over time
D − R margin in this seat's races around 2022
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 2, 2026, 5:14 AM ET