I choose Kamala Harris. I heard someone say she is a corporate Democrat. Oh well. There are only three on that list (Biden, Sanders, Clinton) I know anything about politically. I don't know much about Kamala Harris, to be honest.
But, I don't think any of the above mentioned three are going to run in 2020. We'll see what happens.
Bernie Sanders announced today, February 19, 2019, that he is running! I am so happy to hear this. I hope he wins the primary.