INDIANAPOLIS (AP) — Once dismissed as a fringe contender, businessman Donald Trump now is all but certain to lead the Republican Party into the fall presidential campaign against Democratic front-runner Hillary Clinton — a stunning political triumph for a first-time candidate whose appeal to frustrated voters was widely underestimated. Trump's victory in Indiana Tuesday and Ted Cruz's abrupt decision to drop out resolved the Republican nominee for 2016, but it still left the party in a deep state of uncertainty. Hours before clinching victory in Indiana, Trump was floating an unsubstantiated claim that Cruz's father appeared in a 1963 photograph with John F.