Florida’s race for governor has focused on the candidates’ integrity and their credit or blame for the economy. But an issue seldom mentioned on the campaign trail could play the spoiler in the razor-thin contest.

Medical marijuana, up for legalization under the Amendment 2 initiative, is supported by Democrat Charlie Crist and opposed by Republican Rick Scott. Though neither candidate has made the issue a campaign centerpiece, its presence on the ballot could help decide who takes the governor’s mansion.