2020Final results
2020 election for Missouri House District 89
Missouri House of Representatives · Missouri
Dean Plocher (R) won with 59.6% of the vote, defeating Luke Barber (D) by 19.3 points.
Dean PlocherRepublican · winner · incumbent
59.6%15,200
Luke BarberDemocrat
40.4%10,283
25,483 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