It keeps the rumor alive that this fellow is a "brilliant politician ... orator, etc."
IMNVHO, he is merely a socialistically attractive and politically correct appearing "metrosexual" who has been skating on his color and his looks for his entire life. If he has any talents, they consist of being a paintable image that fits the needs and desires of his handlers, i.e., a blank page.
His teleprompterings are brilliant because his handlers have hit upon a modern idiom that is like an SEO algorithm. They tend to mean absolutely nothing ...gibberish.... to educated persons over 45 years of age and everything to the younger and diverse special interest groups that make up the majority.
Of course, whatever he does, says, or portrays has little interest for his main constituency, the urban Negroes, who are for all intents and purposes behind him 100% merely based on visible melanin. They are the key building block to majorities in the states with more electoral votes.