California (2015) Passed by legislators
Colorado (2016) Passed by ballot measure
District of Columbia (2016) Passed by members of the Council of District of Columbia
Hawaii (Passed in 2018 — went into effect in 2019) Passed by legislators
Maine (2019) Passed by legislators
New Jersey (2019) Passed by legislators
Oregon (Passed in 1994 — went into effect in 1997) Passed by ballot measure
Vermont (Passed in 2013) Passed by legislators
Washington (Passed in 2008) Passed by ballot measure
Montana — Assisted suicide has not been technically legalized. However, according to a 2009 court case, a doctor who is accused of violating the law against assisted suicide can use the patient’s consent as a legal defense.