Most efforts to legalize marijuana possession have generally run aground in the face of unified opposition. Mothers Against Drunk Driving led the charge in helping to defeat a ballot measure in California in 2010. Law enforcement groups, not too surprisingly, have also been largely opposed in the past.
But in Washington State, as a measure that would legalize possession of small amounts of marijuana heads toward a vote next month, the opposition forces have been divided, raising hopes by marijuana advocates of a breakthrough. A poll conducted last month by Elway Research showed that 50 percent of voters either definitely or probably were in favor of legalizing the possession of an ounce of marijuana or less.
Some former law enforcement officials have appeared in television ads in favor of the legalization. Safety concerns about drugged driving have been muted by a provision of the measure, called Initiative 502, that would create a standard to measure impairment. A promised flood of tax money to drug and alcohol treatment programs from legal marijuana sales has also kept some antidrug groups on the sidelines.