2024Final results
2024 election for Missouri Senate District 3
Missouri State Senate · Missouri
Mike Henderson (R) won with 75.9% of the vote, defeating Doug Halbert (D) by 51.7 points.
Mike HendersonRepublican · winner
75.9%60,548
Doug HalbertDemocrat
24.1%19,273
79,821 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET