here are my thoughts so far in 2020:
democrats really want to run a women, as part of the revenge tour 2020. they want a woman to take down the patriarchy and mr. mean. it would be a huge feels victory for them.
but what is high reward, comes with high risk. I don't think democrats could deal with trump defeating two women back to back. They would break from any semblance of reality. It would be psychologically devestating to them. There are also un-quantifiable sexism factors where people may secretly still not want a woman president. As such I think lowest risk for dems is biden. He's a white man. Classic, good ole fashioned presidential material. He will play extremely well in the midwest. He will have obama backing him right from the beginning which will get the sheeple lined up. Biden would take the wind out of trumps sails, and would be the dems best choice.
It'll all come down to... how badly do you want trump gone? 2020 is not an election for democrats to take a high variance, uncertain, untested approach. If I were a dem I would want to get rid of trump immediately and tick off your intersectional pc boxes later on down the line.
Biden makes the absolute most sense.
This is deep level analysis provided freely by me.
Astute as ever.
DEMOCRATS = FEMOCRATS.