John Payne says they're not limiting their pitch to voters to the "medical marijuana" approach other states have used.
"There's a lot of medicinal properties in marijuana, and yes when people use it (for recreational purposes) that's not always the best thing for them," Payne said on, "Missouri Viewpoints."
"But, as adults they should have the freedom to make their own choices."
The group hasn't yet decided whether to try to put the measure on the 2014 or 2016 ballot. They failed to get it on the ballot for last year.