David Blaine astounded Bill Clinton with card tricks at Sting and Trudie Styler’s Upper West Side penthouse at a fund-raiser for the Clinton Global Initiative. We’re told Blaine even pulled a folded card out of his watch, to the ex-president’s amazement. Other attendees at the event this week included Clinton’s daughter, Chelsea, Barry Diller, Donna Karan and Vera Wang. A source said, “The one question on everyone’s mind was: ‘Can we talk Hillary into running in 2016?’ ”