Leadership
- President Pro Tem - Ron Richard
- Majority Floor Leader - Mike Kehoe
- Assistant Majority Floor Leader - Bob Onder
- Majority Caucus Chairman - Eric Schmitt
- Majority Caucus Secretary - Jay Wasson
- Majority Caucus Whip - Brian Munzlinger
- Minority Floor Leader - Joe Keaveny
- Assistant Minority Floor Leader - Gina Walsh
- Minority Caucus Chairwoman - S. Kiki Curls
- Minority Caucus Secretary - Jason Holsman
- Minority Caucus Whip - Maria Chappelle-Nadal