Half the country is far too much, but there is certainly a section of people who consider anything other than full-on no-qualifier cheering of Donald Trump to be "left wing biased lamestream media". I don't know exactly how many people exactly bought in to Trump's cult of personality, but it's a sizeable number (10 to 20% at least).
So how do you keep everyone happy in a case like that? Well, you can't.
So how do you keep everyone happy in a case like that? Well, you can't.