Another step in the prediction:
Mr Biden also committed to choosing a woman as a running mate.
Still not gonna be Warren.
The combination of Biden's age and her ideology would spook the Never Trumpers looking to vote against Trump, as well as, very possibly, many Democrats.
Yeah, it will be a woman, but NOT Warren, and both she and Sanders are going to have to go all out to deliver their ridiculously idealistic but hopefully not totally stupid constituencies to Biden.
