A terrible month for President Donald Trump has raised the question: Is Donald Trump losing his grip on the Republican Party?

Trump biographer Michael Wolff discussed the question with Daily Beast Chief Creative and Content Officer Joanna Coles on Inside Trump’s Head.

“The weaknesses we have here are his physical health, his mental health, and then his hold on the party itself. So I’d say that this is a possible inflection point,” said Wolff.

For the 72-year-old author, two key signs show how Trump is weakening. First, Wolff pointed to Trump’s political ping-ponging as a sign that his mental capacity is declining, as Trump underwent whiplash-inducing 180s on both his allies and enemies in November.

“Wherever he is mentally, I think we’ve seen some evident weirdness,” said Wolff.

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