[stevem]

There’s likely no one reason for the slide...

The main reason for declining viewership is their viewers are dying off with the WWI vets.

[okie01]

“Nightly” averaged 2.18 million 25-54s last week, the week ended May 13. The newscast also saw its total viewers average slide to its lowest point in months, 7.16 million.

Hmmmmmmmmmmm. Let's see...total viewership of 7.16 million, of which 2.18 million was 25-54. Since "Nightly's" viewership among the under 25 demographic is approximately zero, that means that roughly 70% of their audience is over 55.

That's a viewership profile that's doomed to fail over the long run.