Justices heard oral arguments Thursday on Initiative Petition 396. Oklahomans for Modern Laws filed the plan and must collect the signatures of 155,216 registered voters to place the issue on the November ballot.
The group's attorney, Lee Slater, says the plan would make it more convenient for Oklahomans to buy wine by permitting its sale in grocery stores instead of just package liquor stores. More than 30 other states allow wine to be sold in grocery stores.
An attorney for opponents, Jon Brightmire, says proposed changes to the Constitution the plan would require involve multiple subjects in violation of the single-subject rule that applies to constitutional amendments.
Copyright 2012 The Associated Press.