At turns charming about his New York mayoral stint then chippy toward President Barack Obama, Rudy Giuliani delivered a red-meat speech on leadership to a receptive Utah audience Wednesday before a direct question made him pause. "Could there be a Romney-Giuliani ticket in 2012?" Sen. John Valentine, R-Orem, asked the failed 2008 presidential candidate. Giuliani waited for the anxious laughter to fade, then framed a toothy grin. "There could be anything in 2012, who knows?" he told a crowd of nearly 1,000 at the Sheraton Hotel in downtown Salt Lake City. "Things change in American politics almost instantly."