Trump front-and-center as nation's biggest city holds primary election for mayor

He's not on the ballot, but President Donald Trump is front-and-center in the city where he was born and made his fame, as heavily blue New York City holds its Democratic Party primary for mayor.

And in the nation's most populous city, where Democrats for generations have dominated the political landscape, Trump has been the boogeyman on the mayoral campaign trail.

"LA’s in chaos. Imagine it’s Times Square. Trump’s coming for New York. Who do you think can stop him?" said the narrator in an ad earlier this month by former Gov.