I don't think it will happen. I don't think America is ready for two woman on the same ticket but Warren does charge up the crowds.
https://www.washingtonpost.com/politics/clinton-and-warren-electrify-ohio-crowd-sparking-visions-of-a-ticket/2016/06/27/8b169f8e-3a59-11e6-9ccd-d6005beac8b3_story.html
https://www.washingtonpost.com/politics/clinton-and-warren-electrify-ohio-crowd-sparking-visions-of-a-ticket/2016/06/27/8b169f8e-3a59-11e6-9ccd-d6005beac8b3_story.html