Football brought them to the stadium. Donald Trump brought them to the tailgate party. And after a long wait in a bright, late summer sun, those who stuck around for a chance to see Trump were rewarded. Trump was one of four Republican presidential candidates who popped in on a GOP tailgate party at the Iowa vs. Iowa State college football game on Saturday afternoon. The event was put on by the Republican Party of Iowa and a few central Iowa county party organizations. Rand Paul, Marco Rubio and Scott Walker also joined the tailgate party with dozens of Cyclone...