Jeff Greene — who made a killing betting against the housing market — has a double-digit lead over Rep. Kendrick Meek in the Florida Senate Democratic primary race, according to the latest polling. … Greene, who’s running as a “Democratic outsider” and “proven jobs creator,” has been able to distance himself from his old friend, hedge fund manager John Paulson, the man who helped Goldman Sachs pick lousy mortgage bonds to bundle into securities so he could bet against them.