Smart Approaches to Marijuana (SAM), an advocacy group that opposes legalization of recreational marijuana, this week released a scorecard of presidential candidates.
Candidates who received an A rating were Republicans Governor Chris Christie of New Jersey, Senator Marco Rubio of Florida and Dr. Ben Carson.
Democratic frontrunner Hillary Clinton, former Florida Governor Jeb Bush and Senator Ted Cruz of Texas all received a B- from the group. Donald Trump received a C+.
Senators Rand Paul of Kentucky and Bernie Sanders of Vermont received grades of D-,MassLive.com reports.
The ratings are in stark contrast to those given by the pro-legalization group the Marijuana Policy Project, which gave Senator Paul an A-minus. He has called for decriminalizing recreational use of marijuana, and wants states to be able to decide their own marijuana laws.