2010Final results
2010 election for Missouri House District 4
Missouri House of Representatives · Missouri
Mike Thomson (R) won with 83.0% of the vote, defeating Robert Ritterbusch (D) by 66.0 points.
Mike ThomsonRepublican · winner · incumbent
83.0%9,442
Robert RitterbuschDemocrat
17.0%1,934
11,376 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