Problem is it'll have to be something really dirty or sinister to push them over. Right now even Hunter Biden and China won't do it.
They think themselves pure but not so pure that they couldn't support someone into 'necessary' political wheeling and dealing.
For example…. it wasn't Trump allegedly taking orders from Russia that riled common Democrats. Most of them are smart enough to know it was bullshit anyway. But the salacious language about women and incapacitated journalists…that's what animated them.
It'll have to be dirty stuff indeed to turn them. We go back to presumptive tapes of allegedly absolutely depraved activity - if true.
Something like that is the only thing that will swing these people.