electionsmcp › races › Missouri State Senate District 3
Missouri State Senate District 3
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Missouri actually voted.
Model Missouri State Senate District 3 →
Current officeholder
Mike Henderson Republican
2024 result
Republican R+51.7
2024 votes cast
79,821
Office
State Senate
Precinct results — 2024 general
77 precincts reported in Missouri State Senate District 3's 2024 general election. The twenty largest:
| Precinct | Winner | Margin | Votes |
|---|---|---|---|
| 29187-101_ABSENTEE | Republican | R+47.4 | 11,452 |
| 29099-153_ABSENTEE | Republican | R+36.5 | 7,711 |
| 29221-101_ABSENTEE | Republican | R+55.0 | 3,452 |
| 29055-34_CUBA | Republican | R+63.8 | 2,863 |
| 29055-31_ABSENTEE | Republican | R+47.9 | 2,417 |
| 29099-133_JEFFERSON HIGH SCHOOL | Republican | R+52.2 | 2,229 |
| 29186-100_ABSENTEE | Republican | R+27.2 | 2,218 |
| 29099-150_DE SOTO ELKS LODGE | Republican | R+39.9 | 1,903 |
| 29055-39_STEELVILLE | Republican | R+72.6 | 1,819 |
| 29187-3_BONNE TERRE | Republican | R+51.0 | 1,687 |
| 29099-146_ATHENA ELEMENTARY SCHOOL | Republican | R+50.8 | 1,525 |
| 29099-148_SUNRISE SCHOOL | Republican | R+43.4 | 1,353 |
| 29187-13_FARMINGTON 1 | Republican | R+62.0 | 1,330 |
| 29099-112_HILLSBORO CHRISTIAN CHURCH | Republican | R+53.0 | 1,284 |
| 29055-30_BOURBON | Republican | R+60.3 | 1,190 |
| 29187-16_FARMINGTON 4 | Republican | R+52.2 | 1,138 |
| 29099-102_ST. MARTIN'S UNITED CHURCH OF CHRIST | Republican | R+56.6 | 1,092 |
| 29187-28_PATTERSON | Republican | R+66.1 | 1,010 |
| 29187-29_TERRE DU LAC | Republican | R+54.6 | 992 |
| 29186-5_KINSEY | Republican | R+51.5 | 973 |
All 77 precincts are modelable — open the race in the simulator and drill to precinct grain.
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Missouri State Senate District 3 in five steps
- Set the candidates. Name the contenders for the Missouri State Senate District 3 (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Missouri State Senate District 3 in the simulator →
Frequently asked
Who represents Missouri State Senate District 3?
Mike Henderson (Republican) currently holds this State Senate seat.
What was the 2024 result in Missouri State Senate District 3?
R+51.7 — 19,273 Democratic, 60,548 Republican, of 79,821 votes cast.
Can I model this race myself?
Yes — open it in the electionsmcp simulator and model vote-share swing and turnout from the real 2024 baseline, down to the precinct, then roll it up to chamber control.