Will Trump’s ‘reckless’ endorsements be a referendum on his political power?

Some say his bets on extreme candidates are risky, as losses could threaten his role as king and kingmaker in the Republican party

He has long held that the true measure of a man is his TV ratings. So perhaps it came as no surprise when Donald Trump endorsed a celebrity doctor for a US Senate seat in Pennsylvania.

They liked him for a long time," Trump said of Mehmet Oz at a rally in Pennsylvania last week. That's like a poll. You know, when you're in television for 18 years, that's like a poll. That means people like you."