Alaska moved one big step closer Tuesday to a public vote on legalizing marijuana.

On Tuesday, a ballot initiative campaign to decriminalize and regulate pot reached the signature threshold necessary under state election law to put the issue on the Aug. 19 primary ballot.

If the measure passes, Alaska would become the third state in the nation, after Colorado and Washington, to allow cannabis for recreational use.

Backers modeled the proposed initiative after Colorado’s new law, which regulates and taxes marijuana similarly to alcohol.

Read more: Alaska moves another step closer to August marijuana-legalization vote | Anchorage Daily News