| Election Date | State | Title | Outcome |
|---|---|---|---|
| Nov. 8, 2016 | Maine | Question 3: An Act To Require Background Checks for Gun Sales | Failed |
| Nov. 4, 2025 | Maine | Question 2: Establish a process for obtaining an Extreme Risk Protection Order, which restrict a person's access to firearms if they pose a significant danger of causing physical harm | Passed |