 From 1982–89, Stewart served as Vice President of the American Stock Exchange under Arthur Levitt Jr.Responsible for the external affairs of the Exchange, Stewart created with President Reagan's Pollster, Richard Wirthlin, an influential polling base on Wall Street.Stewart helped to manage a task force created by then New York Governor Mario Cuomo and then New York Mayor David Norman Dinkins that resolved the multiyear impasse about what to do with $7,000,000,000 of federal highway money left over when the Westway Project was halted.