He knows the poll numbers are accurate, or close to it, and it's eating him alive inside. Just like how he now touts the economic numbers that were fake under Obama but real now. How must it feel to him that the only real thing he can cling to he inherited from the President he spent 8 years demeaning.
He's never been above water on popular numbers, and ironically his handlers and masters lost control of whatever their shitty incompetent plan was by not realizing how astonishingly vain he is. About half of the things he's drawn needless attention to are because he couldn't shut up about popularity.