FILE - In this June 17, 2015, file photo, marijuana plants grow at LifeLine Labs in Cottage Grove, Minn. Backers of legalizing marijuana in North Dakota have high hopes voters will approve the drug just two years after they said yes to medicinal use. But they may be in for a bummer, since deep-pocketed outside groups so far haven't put a dime into the measure, suggesting they don't see it as a good bet. Meanwhile, opposition groups have spent heavily to publicize their concerns that approval would mean big societal problems. (AP Photo/Jim Mone, File) The Associated Press