# Missouri's 18th Senate district

Missouri's 18th Senatorial District is one of 34 districts in the Missouri Senate. The district has been represented by Republican Cindy O'Laughlin since 2019 and she has served as President Pro Tempore since 2025.

## Geography

The district is based in rural northeastern Missouri and includes Adair, Audrain, Clark, Knox, Lewis, Macon, Marion, Monroe, Putnam, Ralls, Randolph, Schuyler, Scotland, and Shelby county. Major municipalities in the district include Hannibal, Kirksville, Mexico, and Moberly. The district is also home to Truman State University, Mark Twain Lake, and several state parks, forests, and conservation areas..

## Election Results (1998-2022)
### 1998

Missouri's 18th Senatorial District Election (1998) :
| Party | Party | Candidate | Votes | % |
| | Democratic | Joe Maxwell | 34,503 | 72.8 |
| | Republican | James Lemon | 12,908 | 27.2 |
| Total votes | Total votes | Total votes | 47,411 | 100.0 |

### 2002

Missouri's 18th Senatorial District Election (2002) :
| Party | Party | Candidate | Votes | % |
| | Republican | John W. Cauthorn | 29,853 | 55.5 |
| | Democratic | Sam Berkowitz | 23,890 | 44.5 |
| Total votes | Total votes | Total votes | 53,743 | 100.0 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 2006

Missouri's 18th Senatorial District Election (2006) :
| Party | Party | Candidate | Votes | % |
| | Democratic | Wes Shoemyer | 28,795 | 51.7 |
| | Republican | Robert J. Behnen | 26,953 | 48.3 |
| Total votes | Total votes | Total votes | 55,748 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 2010

Missouri's 18th Senatorial District Election (2010) :
| Party | Party | Candidate | Votes | % |
| | Republican | Brian Munzlinger | 30,532 | 58.3 |
| | Democratic | Wes Shoemyer (incumbent) | 21,813 | 41.7 |
| Total votes | Total votes | Total votes | 52,345 | 100.0 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 2014

Missouri's 18th Senatorial District Election (2014) :
| Party | Party | Candidate | Votes | % |
| | Republican | Brian Munzlinger (incumbent) | 39,460 | 100.0 |
| Total votes | Total votes | Total votes | 39,460 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2018

Missouri's 18th Senatorial District Election (2018) :
| Party | Party | Candidate | Votes | % |
| | Republican | Cindy O'Laughlin | 46,263 | 70.3 |
| | Democratic | Crystal Stephens | 19,555 | 29.7 |
| Total votes | Total votes | Total votes | 65,818 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2022

Missouri's 18th Senatorial District Election (2022) :
| Party | Party | Candidate | Votes | % |
| | Republican | Cindy O'Laughlin (incumbent) | 42,989 | 75.8 |
| | Democratic | Ayanna Shivers | 13,739 | 24.2 |
| Total votes | Total votes | Total votes | 56,728 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Statewide Election Results

| Year | Office | Results |
| 2008 | President | McCain 57.6 – 39.5% |
| 2012 | President | Romney 64.9 – 35.1% |
| 2016 | President | Trump 72.4 – 23.4% |
| 2016 | Senate | Blunt 61.6 – 33.8% |
| 2016 | Governor | Greitens 63.1 – 34.3% |
| 2018 | Senate | Hawley 67.0 – 29.1% |
| 2020 | President | Trump 74.6 – 23.8% |
| 2020 | Governor | Parson 75.2 – 23.0% |
Source: