A new poll released on Monday revealed the billionaire stormed into the lead among the 16 candidates with a quarter of respondents' support.
Donald Trump has surged into the lead for the 2016 Republican presidential nomination - despite his recent series of headline-grabbing remarks.
A new poll released on Monday shows the brash billionaire stormed into the lead among the 16 candidates with 24 per cent of respondents' support. He was trailed by Wisconsin Governor Scott Walker at 13 per cent - nearly half that of Trump.
But the poll also raised questions about how long he'll be able to maintain the top spot.
The poll, conducted by ABC News and the Washington Post, found that less than 10 per cent of respondents picked him on the final day of the four-day poll.
The drop apparently came after he suggested that Senator John McCain cannot be considered a war hero because he was captured in Vietnam.
Following the remarks, some rivals called for him to drop out of the race, while Senator McCain said the businessman owed veterans' families an apology - but Trump has so far refused to say sorry.
And that's not the only trouble Trump is facing. On Monday, New York City Mayor Bill de Blasio said in a press conference that the city will not be agreeing to new contracts with Trump.
While De Blasio does not know if the city can break existing contracts, "we're certainly not looking to do any business with him going forward," he said.
De Blasio's statement came after Trump labeled Mexican immigrants as drug dealers and rapists leading companies, such as Macy's, to cut ties with him.
Watch Below: John McCain Says Donald Trump Should Apologize to War Vets
