He called the allegations "disqualifying" for the former governor, whom he soundly defeated in the June Democratic mayoral primary, and claimed he would be "Donald Trump's worst nightmare" if elected mayor.

A war of words in the New York City mayor's race erupted Thursday following a report that President Trump is thinking about whether he should get involved​.

The possibility that the president will seek to intercede could inject an element of unpredictability into an already fractious contest.