@edgarblythe,
Back in the 80s/90s the Conservatives used the phrase "Loony left."
I know v little about Joe Biden, the first time I heard of him was when Stephen Colbert said that even Joe Biden had more votes than him in the Democratic nominations way back when Dubya was president. Then he became VP under Obama.
That's about it. As far as I know he's not even confirmed he'll be running, it's a will he, won't he scenario. Trump has isolated a lot of women with his rampant sexism, and the last thing his opponent needs is more of the same. It's not like the Democrats are short of candidates, I think there's something like fifteen or so in the running.
The Democrats need someone in stark contrast to Trump, not someone mired in similar accusations.