The Associated Press called the race just after 9:39 p.m., with approximately 67 percent of voters in favor of the ballot question, 32 percent against it and 57 percent of votes counted.
Cannabis will be made legal for growth, processing and sales, and for recreational use for anyone over 21 years old.
It could still take some time, though.
A bill outlining rules and regulations of the new cannabis industry in New Jersey must still be passed by lawmakers.
Sen. Nick Scutari, D-Union said he hopes to introduce a decriminalization bill later this week.
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