NYT:

Last week, none of the three major cable news networks — CNN, Fox News, or MSNBC — carried Mrs. Clinton’s speech to a workers’ union in Las Vegas, where she debuted sharp new attack lines against Mr. Trump.

Instead, each chose to broadcast a live feed of an empty podium in North Dakota, on a stage where Mr. Trump was about to speak.

The same discrepancy occurred earlier this month, when the cable networks aired Mr. Trump’s address to the National Rifle Association live from start to finish. A speech by Mrs. Clinton in Detroit days later, to a labor union, did not receive the same coverage; all three networks skipped the speech, with Fox News airing a lighthearted segment about a nationwide backlog of cheese.