That being said, no he's not "charismatic", and I agree that he needs work on formal speechifying. He grabs on to phrases such as "hard working taxpayer" and doesn't let go.
What he excels at, however, is connecting directly with the voters. In his ads he looks them straight in the eye and speaks openly. It's a straightforward "this is who I am and what I'm about - like it or leave it". And then he backs up those words with action.
I hope people are ready to choose that approach over empty soaring oratory that sounds pretty but accomplishes nothing.
A good consultant, if they can get their hands on the guy, could change is speech making in a month or so. It’s like watching game films. But it takes time, and you have to check your ego at the door. Because it sucks being told you suck.
That was the excuse given for Obola's "57 states" gaffe.