Regarding Hannity's coverage of Biden's run for 2020…
I think all the Demo craziness and the number of candidates that have announced their campaigns is orchestrated to give the nomination to an establishment candidate like Biden…or even HRC.
In 2016 it was HRC's "turn" and she wanted to run against Trump. All the research said she would do best against him. So the Demo primary had 2 candidates and Bernie got screwed. And the Republican primary had 17 candidates allowing Trump to get the nom.
In the content business, this is called audience fragmentation. An audience will be fragmented across similar content and aggregated when fewer choices are presented. Think about Dems split across CNN, MSNBC, and the broadcasters, and Republicans aggregated on Fox News, "the leader in cable news."
For 2020 the crazy left will be spread across Kamala Harris, Pocahontas, Gillibrand, Booker, etc. and the old school Dems will be concentrated on Biden. Diluting the crazy vote helps Biden.
The DS won't let an unknown quantity in.