Arizona has emerged as a fierce battleground in marijuana legalization and lawmakers aren’t too happy about it. But opponents have already attempted to de-legitimize state legalization in a lawsuit and a new adversary with a powerful position has also emerged — Arizona Gov. Arizona is expected to vote on legalizing recreational marijuana after an advocacy group submitted more than 420,000 signatures to put the question on the ballot. Research indicates states have seen an increase of traffic deaths after legalizing marijuana. The same voter packet also featured voices in favor of the marijuana, including comments by former Gov.