| Election Date | State | Title | Outcome |
|---|---|---|---|
| Nov. 4, 2008 | Missouri | Proposition A: Casinos and Gambling | Passed |
| Aug. 5, 2014 | Missouri | HJR 48: Constitutional Amendment 8 | Failed |
| Nov. 6, 2018 | Missouri | measure: Amendment 4 | Passed |
| Nov. 5, 2024 | Missouri | Amendment 2: Sports Betting Initiative | Passed |
| Nov. 5, 2024 | Missouri | Amendment 5: Osage River Gambling Boat License Initiative | Failed |