WASHINGTON — Presidential candidate Donald Trump ruled out the prospect of a third-party White House bid Thursday and vowed to support the Republican Party’s nominee – whoever it may be. The billionaire businessman announced his decision in a raucous news conference at Trump Tower, the gold-hued skyscraper in midtown Manhattan where he launched his surging and front-running campaign for president. “I have signed the pledge,” Trump said, adding that he intends to win the nomination himself and face whoever the Democrats nominate. read more