Orlando trial lawyer John Morgan said he has pledges of up to $6 million—not including his own substantial checkbook—to back a proposed constitutional amendment going before voters in November that would allow doctors to order marijuana for patients with debilitating illnesses.

Morgan, who largely bankrolled the petition effort that put Amendment 2 on the ballot, said Monday he is prepared to again unfold his own wallet to convince voters to support the proposal which, like all constitutional questions, requires 60 percent approval for passage.