He said that because the networks are covering his speeches so much, he can’t do what the other guys do and read the same speech every day, he has to keep changing it to keep it fresh for the viewers.
Haven’t watched this one yet, but the one earlier this week in Iowa was his best yet. The next day he himself said it was his best yet.
The one in Maine yesterday was a blast when he was talking about Anthony Weiner. He was imitating him on the phone.