MINNEAPOLIS  — A new poll shows a slight majority of Minnesotans asked about legalizing medical marijuana support it.

The Star Tribune’s Minnesota Poll finds 51 percent of those surveyed support using marijuana for medical reasons, while 41 percent oppose such a move. Twenty states and the District of Columbia have laws that allow doctors to prescribe marijuana for a range of medical conditions, including cancer and post-traumatic stress disorder.

The poll of 800 adults last week also found 63 percent oppose legalizing marijuana for recreational use, as Colorado and Washington state have done.

A bipartisan group of lawmakers is expected to push for medical marijuana when the Legislature returns to work later this month.

The poll carries an error margin of plus or minus 3.5 percentage points.