Sorry.
I must respectfully (and vehemently) disagree.
If it were a reporter with a well-known slant to McCain, the left would be howling so loudly that Biden would likely not even show up unless a replacement were named.
And, of course, in the end a replacement would be named.
Of course, that whole scenario would likely never happen; the major hurdle would be finding a MSM reporter who supports McCain.
There are plenty in the MSM who support McCain, though sadly they have to pretend they do not to keep their jobs...