Of course the anti-conservative bias is not limited to the purported leftist media. Such bias is there in abundance as shown by Megyn Kelly and her Fox colleagues and such purported luminaries and the execrable David Brooks.
The bottom line and identifier is "does this media outlet (TV/Blog/Newspaper etc) support either Donald Trump, Ted Cruz or Ben Carson? If the answer is "no" then the outlet is part of the anti-conservative media structure.
The debates have served a valuable purpose by exposing to all and sundry, and especially the so called 'low information voters" amongst the blue collar voters who Trump has brought back on board from their hiatus since the Reagan years, the abject bias of the media.
Never again will they, under the guise of "journalism" perpetrate their hoodwink activity pretending to be above the fray pundits (those who are not obviously partisan that is).
Conservative activists have known this since Palin was subjected to the media's horrors in 2008.What the wider public have learned from the debates and the anti-Trump campaign (which commenced with utter vitriol in March) is, at least, the following;
1. The media hates you, especially if you live in flyover country and "cling to your guns and your religion."If the latter, they look down on you with a special Beltway/NYC/L.A. snobbish elitism
2. The media contains a leftist conspiracy
3. The media does what President Obama dictates they should do-there has never been such a blatant, embarrassing and craven example of submissiveness.
4. The media creates memes using graphs and charts and polls which have no relation to reality. The leftist website "538 dot com" run by ex-"progressive" Daily Kos contributor far leftist Nate Silver and his "pundit" Harry Enten use all sorts of pseudo-realistic imagery to show e.g. that
Trump is just another flash in the pan with a "1% chance of getting the nomination."
5. The media promotes those it believes suits their purpose. For example endlessly having the likes of Fiorina and Rubio or whoever they consider has the best chance of denying a genuine conservative the nomination. Of course if they ever succeeded they would then turn on their new prey to clear the way for Hillary in the general election.
6. The media has no shame. They can be proven to be utterly wrong, for example with the endless anti-Trump memes ("he won't run/won't show his income/won't last etc etc.")
and carry on as if what they said never happened. Unfortunately for them in this on-line age their pronouncements are readily available to toss back at them (not that they care of course but it is edifying.)
7. They admit they are in it for the money. Here's a classic example Washington Post's Dana Milbank
"On Fox News Channel’s “MediaBuzz,” Washington Post columnist Dana Milbank attacked Republican presidential candidate Donald Trump as a “rotten pig,” a “fraud,” and a “Sarah Palin phenomenon.”