‘Donnnaaallldd!!! Donnnaaaaallldd!!!’ Donald Trump was surrounded by fans. He looked happy. He took a bite out of a pork chop on a stick — eating one is a campaign ritual for every politician visiting the Iowa State Fair — and raised his arm in salute. ‘We love you,’ a woman shouted. Someone else yelled: ‘Save our country! Save America!’ No other Republican candidate visiting the fair — no candidate from either party — has generated such crowds and such excitement. ‘I touched him,’ said one woman running over to her friends.