Republicans call for unity to defeat Clinton while Kasich vows to stay

Republican front-runner Donald Trump went from long-shot contender to become the party's presumptive nominee on Tuesday with a commanding win in Indiana, and the party began to coalesce around him as top rival Ted Cruz bowed out of the race.

The New York billionaire, who has never held public office, had repeatedly defied pundits' predictions that his campaign would implode. He prevailed despite making outrageous statements along the way that drew biting criticism but still fed his anti-establishment appeal.