大象传媒

The senior US Republican party figure - Mitt Romney - has made a blistering attack on Donald Trump, calling him an uninformed conman, unfit to lead the country.

But Mr Trump's appeal continues to resonate.

Razia Iqbal spoke to Antonio Caracciolo - a truck driver in New York who is deeply involved in his union. He is also the founder member of a Facebook page - Teamsters United for Donald J Trump.

(Photo: Donald Trump, speaking at a campaign stop. Credit: AP)