The MSM media/press didn't fully expose Obama and his many failures over the past four years. In fact, they were de-emphasized. Most recently the Katrina-like response to Sandy and the Benghazi debacle were ignored. The MSM press/media are more passionate to pursue wrongdoing/coverups (Watergate) when they involve Republicans (Watergate).
Democrats control academia, Hollywood TV and press and, therefore, control the hearts and minds of the public through their huge propaganda machine.
Add to this the many millions of new folks on the public dime and liberal rights/privileges given to illegal aliens, and you have a formula for complete control of the electorate.
The half of us paying the bills should have more powers.