Backers of recreational use of marijuana finally conceded Tuesday what has been generally known for a week: Arizona voters didn’t like their proposal.

The latest major donation to the campaign against legal recreational marijuana in Arizona comes from Las Vegas casino owner Sheldon Adelson, who donated $500,000 last week.

Data recently released by the Centers for Disease Control and Prevention shows people over age 55 make up the fastest-growing demographic of pot users.

Voters on Nov. 8 will decide ballot measures in nine states that would expand legal access to marijuana.

Arizonans would buy nearly $500 million worth of marijuana a year by 2020 if voters agree in November to allow its use here for recreational purposes, according to a new report.

Officials with the Campaign to Regulate Marijuana Like Alcohol in Arizona, formerly the Marijuana Policy Project of Arizona, filed the initiative with the secretary of state this afternoon, setting the stage for a potential vote on legalization in 2016 – six years after Arizonans narrowly voted to legalize medical marijuana.

The Marijuana Policy Project threatened “to harm” the medical marijuana dispensary owned by a doctor who is leading a splinter group pushing recreational marijuana legalization in Arizona.

A Flagstaff lawmaker is hoping to throw a new roadblock in the path of those who want to legalize marijuana in Arizona. Only thing is, his plan may be too little - and too late.