Denver ? The nickname Mile High City could soon have an entirely new meaning.

Denver voters will decide Tuesday whether to make it legal for adults to possess up to an ounce of marijuana. Seattle, Oakland, Calif., and a few college towns already have laws making possession the lowest law enforcement priority.

Supporters in Denver have launched a “Make Denver Safer” campaign that contends the change will help curb domestic violence.

The argument has angered local officials.

A “yes” vote probably won’t make much difference. The city attorney’s office said Denver police will simply file marijuana possession charges under state law, which carries up to a $100 fine and a mandatory $100 drug-offender surcharge.