The Ted Cruz campaign for president took a chance booking a venue as large as the Harriet Island Pavilion in St. Paul for a rally. Not to worry. Thursday night, 500-plus Cruz supporters packed the place, a testament to the Texas senator's increasing strength in the Republican field of presidential candidates. They cheered, hooted, and hollered at the candidate who spits out bites of his conservative philosophy with a Texas drawl and John Wayne simplicity. When he is president, he said, “We will have a president willing to utter the words ‘radical Islamic terrorism.’†When he is president, he said,...