Gubernatorial candidates from the Democratic, Republican and Libertarian parties say the Oklahoma Board of Health thwarted the will of voters last week by approving rules for medical marijuana that bar smoking pot and require pharmacists to staff dispensaries.

Drew Edmondson, the Democratic nominee for governor, said the rules represent "yet another failure of government'' and blamed Gov. Mary Fallin for the chaos surrounding the rules.

He said, "State Question 788 passed by an overwhelming majority of Oklahoma voters, who recognize the benefits medical marijuana could provide for veterans, cancer patients and others suffering from a host of treatable ailments ... Our best hope is that the tide in Oklahoma turns in November, and that when it does, the people's voice will finally be heard and respected."

Edmondson, who served as Oklahoma attorney general for 16 years, said a ban on smokable marijuana has been ruled unconstitutional in one state.