# Missouri's 3rd Senate district

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 county.
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

Missouri's 3rd Senatorial District Election (1996) :
| Party | Party | Candidate | Votes | % |
| | Democratic | John E. Scott | 36,939 | 65.42 |
| | Republican | Leonard F. Arons | 17,970 | 31.83 |
| | Constitution | Ron Levy | 1,555 | 2.75 |
| Total votes | Total votes | Total votes | 56,464 | 100.00 |

### 2000

Missouri's 3rd Senatorial District Election (2000) :
| Party | Party | Candidate | Votes | % |
| | Democratic | John E. Scott (incumbent) | 36,728 | 64.02 |
| | Republican | Leonard F. Arons | 17,354 | 30.25 |
| | Green | Mary A. Auer | 3,287 | 5.73 |
| Total votes | Total votes | Total votes | 57,369 | 100.00 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2001

Missouri's 3rd Senatorial District Special Election (2001) :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry Kennedy | 7,707 | 68.04 |
| | Republican | Matt Hoffman | 3,283 | 28.98 |
| | Green | Robert H. McFall | 337 | 2.98 |
| Total votes | Total votes | Total votes | 11,327 | 100.00 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2004

Missouri's 3rd Senatorial District Election (2004) :
| Party | Party | Candidate | Votes | % |
| | Republican | Kevin Engler | 34,767 | 51.04 |
| | Democratic | Dan Ward | 33,348 | 48.96 |
| Total votes | Total votes | Total votes | 68,115 | 100.00 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 2008

Missouri's 3rd Senatorial District Election (2008) :
| Party | Party | Candidate | Votes | % |
| | Republican | Kevin Engler (incumbent) | 42,551 | 58.72 |
| | Democratic | Dennis Riche | 29,917 | 41.28 |
| Total votes | Total votes | Total votes | 72,468 | 100.00 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2012

Missouri's 3rd Senatorial District Election (2012) :
| Party | Party | Candidate | Votes | % |
| | Republican | Gary Romine | 35,384 | 53.84 |
| | Democratic | Joseph Fallert, Jr | 30,335 | 46.16 |
| Total votes | Total votes | Total votes | 65,719 | 100.00 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2016

Missouri's 3rd Senatorial District Election (2016) :
| Party | Party | Candidate | Votes | % |
| | Republican | Gary Romine (incumbent) | 54,414 | 81.25 |
| | Green | Edward R. Weissler | 12,555 | 18.75 |
| Total votes | Total votes | Total votes | 66,969 | 100.00 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2020

Missouri's 3rd Senatorial District Election (2020) :
| Party | Party | Candidate | Votes | % |
| | Republican | Elaine F. Gannon | 65,686 | 100.00 |
| Total votes | Total votes | Total votes | 65,686 | 100.00 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2024

Missouri's 3rd Senatorial District Election (2024) :
| Party | Party | Candidate | Votes | % |
| | Republican | Mike Henderson | 60,548 | 75.86 |
| | Democratic | Doug Halbert | 19,273 | 24.15 |
| Total votes | Total votes | Total votes | 79,821 | 100.00 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## 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% |
| 2016 | Senate | Blunt 53.7 – 40.8% |
| 2016 | Governor | Greitens 56.6 – 38.9% |
| 2018 | Senate | Hawley 59.6 – 36.5% |
| 2020 | President | Trump 74.1 – 24.5% |
| 2020 | Governor | Parson 70.4 – 27.0% |
Source: