Republican Party presidential candidates Donald Trump and Ted Cruz are in a virtual dead heat in Iowa. Democrats Hillary Clinton and Bernie Sanders are also locked in a close race there. Those figures come from the latest NBC News/Wall Street Journal/Marist poll. Clinton and Sanders also are within the margin of error in New Hampshire, while Trump has built a 16-point lead in the state.________________________________________________ 共和党总统候选人唐纳德`特朗普与特德`科鲁兹在爱荷华州的竞争胜负未分.民主党的希拉里`克林顿与伯尼`桑德斯同样也处在一场势均力敌的竞选中.这些数据来自最新的<全国广播新闻>、<华尔街日报>和<玛丽斯特民调>.在新罕布什尔州,克林顿和桑德斯的差距不大,但特朗普以16个百分点在该州领先._____________________________________________