Voters passed Amendment 64, allowing for the legal, recreational use of marijuana, according to 9NEWS Political Analyst Floyd Ciruli.
Amendment 64 will allow adults over 21 to possess up to an ounce of marijuana. It also would allow people to grow as many as six marijuana plants in private, secure areas.
More than 300 Colorado doctors offered their names in support of Amendment 64. However, the state's chapter of the American Academy of Pediatrics urged a "no" vote. Supporters say alcohol does far worse things than marijuana.