2020Flipped from RepublicanFinal results
2020 election for Missouri Senate District 17
Missouri State Senate · Missouri
Lauren Arthur (D) won with 53.4% of the vote, defeating Mickey Younghanz (R) by 6.8 points, a seat Republicans won last time.
Lauren ArthurDemocrat · winner
53.4%51,690
Mickey YounghanzRepublican
46.6%45,141
96,831 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET