Ohio key in Donald Trump’s march to Republican presidential nomination

Trump enjoyed a relatively controversy-free multi-state tour ahead of primaries that could determine whether he wins the GOP nomination without a contested summer convention.
Perhaps most critical to that equation is today’s winner-take-all contest in Ohio, where the real estate mogul and the popular governor, John Kasich, have intensified their focus on one another — Trump calling his rival “a baby” and Kasich suggesting Trump and the violence at some of his rallies represent a “dark side” of American society.