Media coverage in and of itself is not the whole story. It's what the media does with that coverage.
Once we got it down to the two presumptive nominees of the major parties, things changed dramatically in the way the press covered the two candidates with regard to tone.
This article from the same source shows what all transpired in the 4-week convention period beginning one week before the RNC and ending one week after the DNC.
As the article points out, not only were the references to Clinton's emails easy to count, they were
"a defining feature of her news coverage." But, as it also pointed out,
"Remarkably, a key dimension of the email issue was seldom addressed: What should we make of the emails? How important, exactly, are they in the larger question of choosing a president? And just how large a transgression are they?"
From the charts it's easy to see that once it got down to Trump v Clinton the tone changed and Trump got significantly more negative coverage than did Clinton. If they had fully addressed those key dimensional questions about the emails, the negative coverage for both candidates would almost certainly have been on more equal footing.
But this was a time when the media organizations and the journalists themselves took over the election, beginning in Week 1 and building to a favorable Clinton crescendo the week after the DNC. You can see that in the weekly charts. But just as important is why that is, and you can see that right up top in the first chart, where
"where the prevailing voices are not those of the nominees but instead those of reporters." It's where the reporters drove the narrative the way they wanted it, from Week 1 through Week 4, which set the tone for the rest of the coverage, which is what we see today.
"Negative news reports about policy positions, for example, outnumbered positive reports 82 percent to 18 percent. Trump experienced a reversal of the “good press” he had received earlier in the campaign..."
"What appeared to be missing from this negative coverage, however, was context. For example, although Clinton’s email issue was clearly deemed important by the media, relatively few stories provided background to help news consumers make sense of the issue—what harm was caused by her actions, or how common these actions are among elected officials."
"...coverage of policy and issues, although they were in the forefront at the conventions, continued to take a back seat to polls, projections, and scandal." And Trump's reaction to the DNC speech of Khizr Khan was scandalicious. Khan attacked Trump from the stage, and Trump in a vicious, brutal, heartless and remorseless attack, replied with,
"I'd like to hear his wife say something."
Well, that was just too much. A Clinton campaign senior spokeswoman Tweeted within seconds of Trump's reply,
"Trump is truly shameless to attack the family of an American hero. Many thanks to the Khan family for your sacrifice, we stand with you." The press responded with 'Got it!
Attack it is.' Within just a few days, if you didn't know what Trump's actual response was, you'd have thought Trump went after Khan and his wife with a machete.