If "yes" votes prevail across the country, about 75 million people accounting for more than 23 percent of the USA population would live in states where recreational pot is legal.
California and four other states are voting on whether to legalize the recreational use of marijuana. Already, half of the states permit some form of medical marijuana use, and more than half of all Americans live in a state that has approved medical marijuana.
California, Massachusetts and ME have initiatives on the ballot that are expected to pass. Arizona and Nevada are also voting on the issue, with Nevada polls showing an even split. Three others - Florida, Arkansas and North Dakota - decided whether to permit marijuana for medical purposes. Question 4 asks voters to choose whether or not to legalize the recreational use of marijuana.
Here's a quick guide to the measures, listed first by recreational and then by medical. Six years ago, the last California marijuana legalization initiative failed by a 54-46 margin, after some polls indicated that it might narrowly prevail. The measure also maintains existing prohibitions on youth use and driving while high. "If this passes we're going to be the first real red state that [does] this".
Those five 2016 ballot initiatives advance the Project's vision, as outlined on its site as "a nation where marijuana is legally regulated similarly to alcohol, marijuana education is honest and realistic, and treatment for problem marijuana users is non-coercive and geared toward reducing harm".
What would Arizona's marijuana law do?
If "yes" votes prevailed across the board, more than 23 percent of the USA population will live in states where recreational pot is legal. Pot would be highly regulated and heavily taxed, and some states would let people grow their own.
An approval in ME would also provide another example for lawmakers on Capitol Hill to determine whether or not the "marijuana experiment" is working.
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The races are also tight in the states voting on medical marijuana. Dianne Feinstein, D-Calif. - argue that legalizing marijuana will lead to a sharp increase highway fatalities and impaired driving, noting there is no current standard for determining if a driver is "impaired" by marijuana.
There's also concern that the measure requires marijuana-focused publications to be sold from behind store counters, a proposal that was struck down as unconstitutional in Colorado. Twenty-five states allow the legal use of medical marijuana. Nevada's tax would be 15%; in MA it would be 3.75%.
What would the MA marijuana law do?
Public health experts who oppose Question 1 say marijuana use can have negative health effects in the long term. The measure would set up a $25 billion-a-year health care system funded by payroll taxes, replacing the system of paying private health insurers for care and opting out of the federal health care law.
What would Nevada's marijuana law do?
A "yes" vote supports legalizing the possession and consumption of marijuana by persons who are 21 years of age or older.
The new law, proposed as Prop 64, would make an effort to take advantage of the vast marijuana infrastructure already in place in the Golden State.
What would Arkansas' marijuana law do? Marijuana has been legal for medicinal purposes in Nevada since 2000. On Oct. 28, the Marijuana Policy Group published a comprehensive report crediting legal weed with having created 18,005 full-time jobs and adding about $2.4 billion to the state's economy in 2015.