Missouri's 3rd Senatorial District is one of 34 districts in the Missouri Senate. The district has been represented by Republican Mike Henderson since 2025.
Geography The district includes southwestern portions of the St. Louis metropolitan area and includes Crawford, St. Francois, Ste. Genevieve, Washington, and southern Jefferson counties. Major municipalities in the district include Bloomsdale, Bonne Terre, Cuba, De Soto, Farmington, and Park Hills. The district also includes a portion of Mark Twain National Forest.
Election results (1996–2024) 1996
2000
2001
2004
2008
2012
2016
2020
2024
Statewide election results Year Office Results 2008 President McCain 49.4 – 48.4% 2012 President Romney 59.0 – 41.0% 2016 President Trump 71.0 – 24.8% Senate Blunt 53.7 – 40.8% Governor Greitens 56.6 – 38.9% 2018 Senate Hawley 59.6 – 36.5% 2020 President Trump 74.1 – 24.5% Governor Parson 70.4 – 27.0% Source:
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