I was just having this conversation the other day, learning lessons from 2016. I see the crowds he gets and then I look at the crowds the Dem candidates are getting, and it's probably something about which we should be mindful, because that same enthusiasm gap should've been obvious to us in 2016, when the Hillary rally crowds were noticeably smaller and Hillary signs were noticeably less common than Trump signs. Dem candidates need enthusiastic support, like with Obama, or throngs of their base just don't show up to vote. The GOP has far less of a problem in that regard. If they nominate Warren or Mayor Pete, I think the minority vote will shrink below Hillary's percentages from 2016.