The Iowa State Fair is over, but the circus is coming to town. On Sept. 14, Hillary and Bill Clinton will attend the 37th annual Harkin Steak Fry, the famous Iowa political event named after Sen. Tom Harkin. A mess of journalists will rush after the couple, looking for signs of a presidential campaign and drawing conclusions on the nearest barn wall. (It is fitting that the event takes place on a hot air balloon field.) But there will also be thousands of normal human beings in that Indianola field, extending their phones like periscopes to capture one or both of the Clintons as they pledge allegiance before a vast flag or pretend to cook steak on a grill that’s almost as large.