Republicans hope huge amounts of dark money will save their Senate majority

http://www.dailykos.com/stories/2016/9/15/1570436/-Republicans-see-huge-amounts-of-dark-money-saving-their-Senate-majority
"We knew this was coming months ago—Republican donors dreading a Trump candidacy were going to pour everything they had into keeping the Senate, or keeping Democratic gains to a minimum so that retaking it in 2018 would be easier."