Gov. Rick Scott’s fight to keep patients from smoking pot could spark a “political wildfire” that will cost the Republican votes in his battle to unseat U.S. Sen. Bill Nelson, according to the man largely responsible for making medical marijuana legal in Florida.

Orlando trial lawyer John Morgan, who spent more than two years and millions of dollars of his own money to convince voters to approve a constitutional amendment broadly legalizing medical marijuana, called on the governor to reverse his opposition to smokable pot, or suffer the consequences.