I think people like it that he is authentic.
And boy, he is definitely authentic.
He got into the Iran deal and actually got into the specifics. You can tell that he has been prepping for the debates because he is inserting more details into his speech.
Also, last but not least, you can tell he is having a good time. He loves to share stories and talk...it is very entertaining in a Jewish comedian kind of way.
I think you are right. He was very good at the airport in Laredo the other day. Have not watched the Iowa rally yet. will catch it later tonight.