Ok, so I just got around to reading the linked article and this part stood out to me:
“I guess the liberal media get annoyed when Senators listen to their constituents and think for themselves, rather than doing the media’s bidding,” Bill Kristol, the editor-in-chief of the Weekly Standard, told POLITICO.
The odd thing about this, is that the Senators didn’t listen to their constituents. If they had, the vote would have been a landslide to pass at least some of the background check proposals, which are resoundingly favored across the country.
So the press coverage wasn’t so much partisan as much as it was reflective of listener opinion, including NRA members. Except for the gun lobby NRA members.