Donna Brazile Clinton Leak 

During the course of the 2016 election it was revealed that Donna Brazile had leaked debate questions to Hillary Clinton, the Democratic Nominee, while working at CNN. 

Donna Brazile was a contributor for the network when she leaked these debate questions to Clinton. After this information was published, Donna Brazile resigned from her position at CNN.

The debate questions getting leaked was not necessarily a big deal as the debates have very little impact on the actual election. This was a very serious ethics issue and it showed that the media was in the pocket of the Democrats.