According to Washington Post's Election Lab forecast, Republicans' chances of winning control of the Senate has been reduced from basically a sure thing back in mid-June, standing then at 86% against 14% for Senate Democrats, to today's numbers which show a true toss-up, only favoring the GOP by 52-48%. Now that's what I call movement! The GOP tsunami has turned into stillwater.
http://www.washingtonpost.com/blogs/the-fix/wp/2014/09/03/our-senate-model-is-moving-in-democrats-direction-all-of-a-sudden-why/