I really don't understand what the media is trying to accomplish by pushing this narrative. This fear mongering will create distrust in elections and the election results, undermining democracy.
They also believe that Russia literally hacked into voting registers and changed votes too. They are confused with the Russia/DNC hack connection, though, but evidence to the contrary has not convinced them otherwise. So they think "voting can easily be hacked, but I hate Trump, so I need to make sure that I vote."