OKLAHOMA CITY (AP) — Oklahoma's Republican gubernatorial candidates have mostly avoided taking a clear stance on whether the state should legalize medical marijuana, though both Democratic candidates support the policy change.

Gov. Mary Fallin on Friday set a June 26 election for the medical marijuana legalization question, the Tulsa World reported .

The measure would allow those with a state-issued medical license from a board-certified physician to possess certain amounts of marijuana. It would also establish a regulatory regime for the growing and selling of marijuana.

Democrats Connie...