Donald Trump courted voters in the crucial swing state of Florida with a call to a local radio radio station ahead of polling day.

ITV News' Emma Murphy was filming a piece at AM Tampa Bay when the weary-sounding Republican presidential candidate phoned in.

Florida is one of several swing states in the 2016 election that Trump needs to win, and votes there are being hard fought over with his Democratic rival Hillary Clinton.

Trump told presenters Jack and Tedd his "big message" was about repealing Obamacare, the legislation on affordable healthcare that Barack Obama introduced in 2010.

"Hillary wants to double down on [Obamacare]. It's going to be much more expensive and it doesn't work. It doesn't work. it never will work," he said.

He also reiterated his comments on other hot topics of his campaign, calling for "extreme vetting" of immigrants.

"I think border security is very important ... it's incredible what's happening at our borders, the drugs are pouring in," he said.

But Trump's campaign has also focused around his image as an iconoclast who will smash a cosy Washington DC political elite, or "drain the swamp" as it has become known.

He criticised what he sees as an unwillingness to bring criminal charges against Clinton over her use of a private email server while she was Secretary of State.

Asked if, should he be elected president, he would keep James Comey, the FBI chief who waded into the Clinton email debate, in place, he said he did not want to comment on it.

But then added that "everybody's disappointed with what's happening".