这是一场历史性的蓝色浪潮：民主党拿下了国会两院，在参议院翻转了多达七个席位，在众议院至少翻转了29个席位。而仅仅两年前，这个国家还曾被红色浪潮席卷。局势为何会发生如此剧烈的逆转？
It was a historic blue tsunami: The Democratic Party captured both chambers of Congress, flipping as many as seven seats in the Senate and at least 29 in the House of Representatives. Just two years ago, the nation had been hit by a red wave. How did things turn around so dramatically?
NBC新闻出口民调显示，这是一系列关键因素共同作用的结果：选民对经济感到厌倦，民主党候选人显得更受选民欢迎，包括拉丁裔和黑人男性在内的关键投票群体转向支持民主党，共和党的形象下滑，以及选民对总统唐纳德·特朗普本人的强烈否定。
A cocktail of crucial factors: Voters feeling fed up with the economy, Democratic candidates emerging as more well-liked, key voting blocs — including Latinos and Black men — shifting blue, opinions of the Republican Party dropping and a resounding rejection of President Donald Trump himself, according to the NBC News Exit Poll.
以下是我们通过分析这项民调的数据，对周二这场令人震惊的中期选举所得出的了解。该民调在全国范围内调查了超过7.9万名选民。
Here’s what we have gleaned about Tuesday’s stunning midterms analyzing data from the poll, which surveyed more than 79,000 voters nationwide.