For me, its gonna come down to whether Carson can be a better public speaker. Hes smart, sure. But hes got some serious issues with not knowing what to do with his hands, and not sounding confident all the time. To some extent you can play that off as "as a scientist, the more you know...the harder it is to be confident in anything" but still. Needs some aggressive fire.

Rubio is the only one so far that seems able to weave an emotional story and pull on some heart-strings, and if no one else can do that then hes gonna win fo sho.