Dana Bash is a Romney-type Republican. Sure, she claims to be independent, but ideologically, she's a moderate conservative, and has always been so.
So, a fine balanced team, a moderate Democrat and a moderate Republican. Needless to say, because it's balanced, liberals have no problems with it, and conservatives hate it. Conservatives all know they can't win on a level playing field, so they always try to work the refs.
If anyone says Dana Bash is liberal, just smile, twirl a finger around your ear, and slowly back away from the kook before they drool on you. Someone would have to be even more senile than Trump to claim something that insane. Thus, most of the Trumptards here are saying it.
Of course, we know what's really going on. Even the Trumptards know how senile Trump is, and how sharp Biden is. They're all either looking for excuses for Trump to run from the debate, or making excuses for why Trump will lose in such a humiliating manner.
Needless to say, you don't see any Democrats wanting Biden to back out.