Arizona Medical Marijuana Act was approved on November 2, 20101. The Arizona Medical Marijuana Act was approved on November 2, 2010, after receiving 50.13% of the votes. 2. The legalization of the medical marijuana act allows qualified patients to use, possess, and grow particular amounts of marijuana. They need to register and secure a licensed doctor's written note that states that they need medical marijuana to treat their illnesses. 3. There are only a number of diseases ...