The measure would have made it legal for adults 21 and older to purchase and possess up to an ounce of marijuana, and to grow as many as six mature cannabis plants for personal use.
It also would have placed a 15% tax on sales of all recreational marijuana products, with revenues divvied up between municipalities and the state's general fund, public education grants and substance abuse programs.
The existing state medical marijuana authority would have been tasked with regulating and licensing commercial cannabis businesses.
In addition, individuals already convicted of low-level marijuana offenses that the measure proposed to make legal could have sought re-sentencing or have their records expunged.