The Washington Post.
I don't think this was true even 5 years ago, but now we have reached the point where the influence of legacy media outlets is almost entirely through their influence of, and amplification by, other powerful people. The problem with Morning Joseph is that members of Congress watch him. Almost nobody else does.
The problem with CNN and MSNBC is that they are on in congressional offices all day. Nobody else watches them.
During total day, MSNBC averaged 466,000 total viewers and 37,000 demo [25-54] viewers. This represented a -6% loss in total viewers and a -21% fall in the demo compared to the network’s average the week prior.
...
In total day, the network [CNN] had 366,000 total viewers and 54,000 viewers in the demo [25-54]. This resulted in a 17% increase in total viewers and an 8% increase in the demo during this daypart.
The only reason to care about what's in the WaPo opinion page is that Chuck Schumer probably does.