Arizona’s ballot measure to legalize marijuana passed Tuesday with voters deciding to join 11 other states that have done so despite a conflict with federal law, according to The Associated Press.

Proposition 207 would legalize possession of as much as an ounce of marijuana for adults 21 and older and set up a licensing system for retail sales of the drug, starting with the medical-marijuana dispensaries already operating in the state. Sales could begin in March under the measure.

Once the election results are made official Nov. 30, possession and growing as many as six plants at home will be legal for adults.

The measure also would allow people previously convicted of marijuana crimes, such as the felony charge for possession, to have their records expunged by the courts.

And it would establish special “social equity” licenses for communities historically disenfranchised by marijuana laws.

SEE THE WINNERS: Arizona election results

The Department of Health Services would be responsible for determining who is eligible to apply for those social equity licenses, and would also be responsible for developing rules for the program and reviewing applications from medical dispensaries.

The approximately 120 medical-marijuana dispensaries operating in the state today, which have provided nearly all of the funding for Proposition 207, would be allowed to sell the drug to anyone over 21, not just people who have a doctor’s recommendation and state-issued medical-marijuana card.

Dispensaries are anticipating a crush of new business. The Mint Dispensaries, for example, are prepared to expedite the construction of a new, $25 million, 100,000-square-foot growing operation in north Phoenix to keep their Guadalupe and Mesa retail sites stocked if Proposition 207 passes.

The Mint also already has approval from Mesa to expand its dispensary there as well, and can add additional registers in the Guadalupe store beyond the 21 in the store now, said Raúl Molina, a partner and senior vice president of operations.

“We think we’re ready for it,” Molina said before Election Day.

Company officials do not want to run out of marijuana for medical patients or be left with no supply for recreational customers, which has happened in other states that transitioned from medical to recreational sales.

A similar measure also passed in New Jersey on Tuesday, according to the Associated Press, while recreational-marijuana initiatives were leading in early results in Montana and South Dakota as well.

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Attorney Adam Trenk, director of the Cannabis Department at the Rose Law Group, said nearly all medical dispensaries are expected to apply to sell recreational marijuana.

“I can’t imagine a world where they wouldn’t because they immediately expand the demographic of people who can walk into the store from just those with (medical-marijuana) cards to anyone over the age of 21,” Trenk said.

He also said his firm would help clients, including some through pro bono work, to expunge criminal records for marijuana-related crimes as allowed through the measure.

“We will, through community law centers, work to help those who qualify to get