Hasn't happened yet, but political journalism in the US will have to rethink it's relationship to the Republican Party, as conspiracy thinking, attacks on the press, and, to use an academic term, making shit up become not what the GOP does, but what it is. https://www.nytimes.com/2019/11/27/opinion/barr-liberals-family.html

Increasingly, the GOP coalition is held together by practices that must collide with journalism if journalism is doing its job. The imaginary threats to its voters will have to intensify, the petty resentments will have a more and more fictitious basis, like the war on Christmas.

In other words, the Republican party is changing the way it is organized such that it cannot function without hot conflict between itself and the press over whether this or that made-up thing actually happened. Nothing in the playbook about what to do under conditions like these.